[asm] iast taint-tracking flaky (#5225)

Author: iunanua

packages/dd-trace/test/appsec/iast/taint-tracking/rewriter.spec.js

@@ -301,16 +301,13 @@ describe('IAST Rewriter', () => {
           function onHardcodedSecret (literals) {
             expect(literals).to.deep.equal(literalsResult)
 
+            hardcodedSecretCh.unsubscribe(onHardcodedSecret)
             done()
           }
 
           hardcodedSecretCh.subscribe(onHardcodedSecret)
 
           port.postMessage({ type: constants.REWRITTEN_MESSAGE, data })
-
-          setTimeout(() => {
-            hardcodedSecretCh.unsubscribe(onHardcodedSecret)
-          }, 50)
         })
 
         it('should log the message', (done) => {