[ios] Removed armv7s slice from iOS gyp targets

All gyp-generated iOS targets build for the standard architectures, which do not include armv7s.

Fixes #4704.

platform/ios/CHANGELOG.md

@@ -5,6 +5,7 @@ Mapbox welcomes participation and contributions from everyone.  If you’d like
 ## master
 
 - Applications linking against the SDK static framework no longer need to add `-ObjC` to the Other Linker Flags (`OTHER_LDFLAGS`) build setting. If you previously added this flag solely for this SDK, removing the flag may potentially reduce the overall size of your application. ([#4641](https://github.com/mapbox/mapbox-gl-native/pull/4641))
+- Removed the `armv7s` slice from the SDK to reduce its size. iPhone 5 and iPhone 5c automatically use the `armv7` slice instead. ([#4641](https://github.com/mapbox/mapbox-gl-native/pull/4641))
 - User location heading updates now resume properly when an app becomes active again. ([#4674](https://github.com/mapbox/mapbox-gl-native/pull/4674))
 - Removed unused SVG files from the SDK’s resource bundle. ([#4641](https://github.com/mapbox/mapbox-gl-native/pull/4641))
 

platform/ios/platform.gyp

@@ -23,13 +23,6 @@
           'GCC_VERSION': 'com.apple.compilers.llvm.clang.1_0',
           'CODE_SIGN_IDENTITY': 'iPhone Developer',
         },
-        'configurations': {
-          'Release': {
-            'xcode_settings': {
-              'ARCHS': [ "armv7", "armv7s", "arm64", "i386", "x86_64" ],
-            },
-          },
-        },
       }],
     ],
   },