Temporarily remove iOS from travis (rust-windowing#1174)

Author: Osspial

.travis.yml

@@ -36,13 +36,13 @@ matrix:
       os: osx
       rust: stable
 
-    # iOS
-    - env: TARGET=x86_64-apple-ios
-      os: osx
-      rust: nightly
-    - env: TARGET=x86_64-apple-ios
-      os: osx
-      rust: stable
+    # # iOS
+    # - env: TARGET=x86_64-apple-ios
+    #   os: osx
+    #   rust: nightly
+    # - env: TARGET=x86_64-apple-ios
+    #   os: osx
+    #   rust: stable
 
 addons:
   apt:
@@ -69,7 +69,7 @@ after_success:
         [ $TRAVIS_BRANCH = master ] &&
         [ $TRAVIS_PULL_REQUEST = false ] && {
             cd glutin
-            for crate in ../glutin_*_sys; do 
+            for crate in ../glutin_*_sys; do
                 cd "$crate"
                 cargo publish --token ${CRATESIO_TOKEN_GENTZ}
             done