[Security Solutions] Removes POC transforms (elastic#129673)

## Summary

Removes the `metrics_entities` plugin and POC. As a different direction will be taken and people can look back at the git history for it as they see fit if they need to refer to it. Once it's re-added it it will be through an RFC process and re-discussed.

Earlier PR's which added the POC:

elastic#96446
elastic#104559

### Checklist

- [x] [Unit or functional tests](https://www.elastic.co/guide/en/kibana/master/development-tests.html) were updated or added to match the most common scenarios

Author: FrankHassanabad

.eslintrc.js

@@ -1242,132 +1242,6 @@ module.exports = {
       },
     },
 
-    /**
-     * Metrics entities overrides. These rules below are maintained and owned by
-     * the people within the security-solution-platform team. Please see ping them
-     * or check with them if you are encountering issues, have suggestions, or would
-     * like to add, change, or remove any particular rule. Linters, Typescript, and rules
-     * evolve and change over time just like coding styles, so please do not hesitate to
-     * reach out.
-     */
-    {
-      // front end and common typescript and javascript files only
-      files: [
-        'x-pack/plugins/metrics_entities/public/**/*.{js,mjs,ts,tsx}',
-        'x-pack/plugins/metrics_entities/common/**/*.{js,mjs,ts,tsx}',
-      ],
-      rules: {
-        'import/no-nodejs-modules': 'error',
-        'no-restricted-imports': [
-          'error',
-          {
-            // prevents UI code from importing server side code and then webpack including it when doing builds
-            patterns: ['**/server/*'],
-          },
-        ],
-      },
-    },
-    {
-      // typescript and javascript for front and back end
-      files: ['x-pack/plugins/metrics_entities/**/*.{js,mjs,ts,tsx}'],
-      plugins: ['eslint-plugin-node'],
-      env: {
-        jest: true,
-      },
-      rules: {
-        'accessor-pairs': 'error',
-        'array-callback-return': 'error',
-        'no-array-constructor': 'error',
-        complexity: 'error',
-        'consistent-return': 'error',
-        'func-style': ['error', 'expression'],
-        'import/order': [
-          'error',
-          {
-            groups: ['builtin', 'external', 'internal', 'parent', 'sibling', 'index'],
-            'newlines-between': 'always',
-          },
-        ],
-        'sort-imports': [
-          'error',
-          {
-            ignoreDeclarationSort: true,
-          },
-        ],
-        'node/no-deprecated-api': 'error',
-        'no-bitwise': 'error',
-        'no-continue': 'error',
-        'no-dupe-keys': 'error',
-        'no-duplicate-case': 'error',
-        'no-duplicate-imports': 'error',
-        'no-empty-character-class': 'error',
-        'no-empty-pattern': 'error',
-        'no-ex-assign': 'error',
-        'no-extend-native': 'error',
-        'no-extra-bind': 'error',
-        'no-extra-boolean-cast': 'error',
-        'no-extra-label': 'error',
-        'no-func-assign': 'error',
-        'no-implicit-globals': 'error',
-        'no-implied-eval': 'error',
-        'no-invalid-regexp': 'error',
-        'no-inner-declarations': 'error',
-        'no-lone-blocks': 'error',
-        'no-multi-assign': 'error',
-        'no-misleading-character-class': 'error',
-        'no-new-symbol': 'error',
-        'no-obj-calls': 'error',
-        'no-param-reassign': ['error', { props: true }],
-        'no-process-exit': 'error',
-        'no-prototype-builtins': 'error',
-        'no-return-await': 'error',
-        'no-self-compare': 'error',
-        'no-shadow-restricted-names': 'error',
-        'no-sparse-arrays': 'error',
-        'no-this-before-super': 'error',
-        // rely on typescript
-        'no-undef': 'off',
-        'no-unreachable': 'error',
-        'no-unsafe-finally': 'error',
-        'no-useless-call': 'error',
-        'no-useless-catch': 'error',
-        'no-useless-concat': 'error',
-        'no-useless-computed-key': 'error',
-        'no-useless-escape': 'error',
-        'no-useless-rename': 'error',
-        'no-useless-return': 'error',
-        'no-void': 'error',
-        'one-var-declaration-per-line': 'error',
-        'prefer-object-spread': 'error',
-        'prefer-promise-reject-errors': 'error',
-        'prefer-rest-params': 'error',
-        'prefer-spread': 'error',
-        'prefer-template': 'error',
-        'require-atomic-updates': 'error',
-        'symbol-description': 'error',
-        'vars-on-top': 'error',
-        '@typescript-eslint/explicit-member-accessibility': 'error',
-        '@typescript-eslint/no-this-alias': 'error',
-        '@typescript-eslint/no-explicit-any': 'error',
-        '@typescript-eslint/no-useless-constructor': 'error',
-        '@typescript-eslint/unified-signatures': 'error',
-        '@typescript-eslint/explicit-function-return-type': 'error',
-        '@typescript-eslint/no-non-null-assertion': 'error',
-        '@typescript-eslint/no-unused-vars': 'error',
-        'no-template-curly-in-string': 'error',
-        'sort-keys': 'error',
-        'prefer-destructuring': 'error',
-        'no-restricted-imports': [
-          'error',
-          {
-            // prevents code from importing files that contain the name "legacy" within their name. This is a mechanism
-            // to help deprecation and prevent accidental re-use/continued use of code we plan on removing. If you are
-            // finding yourself turning this off a lot for "new code" consider renaming the file and functions if it has valid uses.
-            patterns: ['*legacy*'],
-          },
-        ],
-      },
-    },
     /**
      * Alerting Services overrides
      */

.github/CODEOWNERS

@@ -394,7 +394,6 @@
 /x-pack/test/plugin_functional/plugins/resolver_test/ @elastic/security-solution
 /x-pack/test/plugin_functional/test_suites/resolver/ @elastic/security-solution
 /x-pack/plugins/security_solution/ @elastic/security-solution
-/x-pack/plugins/metrics_entities/ @elastic/security-solution
 /x-pack/test/detection_engine_api_integration @elastic/security-solution
 /x-pack/test/lists_api_integration @elastic/security-solution
 /x-pack/test/api_integration/apis/security_solution @elastic/security-solution

docs/developer/plugin-list.asciidoc

@@ -524,12 +524,6 @@ using the CURL scripts in the scripts folder.
 |Visualize geo data from Elasticsearch or 3rd party geo-services.
 
 
-|{kib-repo}blob/{branch}/x-pack/plugins/metrics_entities/README.md[metricsEntities]
-|This is the metrics and entities plugin where you add can add transforms for your project
-and group those transforms into modules. You can also re-use existing transforms in your
-newly created modules as well.
-
-
 |{kib-repo}blob/{branch}/x-pack/plugins/ml/readme.md[ml]
 |This plugin provides access to the machine learning features provided by
 Elastic.

packages/kbn-cli-dev-mode/src/get_server_watch_paths.test.ts

@@ -76,7 +76,6 @@ it('produces the right watch and ignore list', () => {
       <absolute path>/x-pack/plugins/lists/server/scripts,
       <absolute path>/x-pack/plugins/security_solution/scripts,
       <absolute path>/x-pack/plugins/security_solution/server/lib/detection_engine/scripts,
-      <absolute path>/x-pack/plugins/metrics_entities/server/scripts,
       <absolute path>/x-pack/plugins/uptime/e2e,
     ]
   `);

packages/kbn-cli-dev-mode/src/get_server_watch_paths.ts

@@ -66,7 +66,6 @@ export function getServerWatchPaths({ pluginPaths, pluginScanDirs }: Options) {
     fromRoot('x-pack/plugins/lists/server/scripts'),
     fromRoot('x-pack/plugins/security_solution/scripts'),
     fromRoot('x-pack/plugins/security_solution/server/lib/detection_engine/scripts'),
-    fromRoot('x-pack/plugins/metrics_entities/server/scripts'),
     fromRoot('x-pack/plugins/uptime/e2e'),
   ];
 

x-pack/.i18nrc.json

@@ -38,7 +38,6 @@
     "xpack.logstash": ["plugins/logstash"],
     "xpack.main": "legacy/plugins/xpack_main",
     "xpack.maps": ["plugins/maps"],
-    "xpack.metricsEntities": "plugins/metrics_entities",
     "xpack.ml": ["plugins/ml"],
     "xpack.monitoring": ["plugins/monitoring"],
     "xpack.osquery": ["plugins/osquery"],