Remove old iOS porting files.

gyp/iOSShell.gyp

   # Copyright 2015 Google Inc.
 #
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 #
 {
   'conditions' : [
     [ 'skia_os == "ios"', {
       'targets': [
         {
@@ skipping 26 matching lines @@
             '../experimental/iOSSampleApp/iPad/AppDelegate_iPad.mm',
             '../experimental/iOSSampleApp/iPad/SkUISplitViewController.mm',
             '../experimental/iOSSampleApp/iPad/MainWindow_iPad.xib',
 
             # iPhone
             '../experimental/iOSSampleApp/iPhone/AppDelegate_iPhone.mm',
             '../experimental/iOSSampleApp/iPhone/SkUINavigationController.mm',
             '../experimental/iOSSampleApp/iPhone/MainWindow_iPhone.xib',
 
             '../src/views/ios/SkOSWindow_iOS.mm',
-            '../src/utils/ios/SkStream_NSData.mm',
             '../src/utils/mac/SkCreateCGImageRef.cpp',
           ],
           'link_settings': {
             'libraries': [
               '$(SDKROOT)/System/Library/Frameworks/CoreFoundation.framework',
               '$(SDKROOT)/System/Library/Frameworks/CoreGraphics.framework',
               '$(SDKROOT)/System/Library/Frameworks/CoreText.framework',
               '$(SDKROOT)/System/Library/Frameworks/UIKit.framework',
               '$(SDKROOT)/System/Library/Frameworks/Foundation.framework',
               '$(SDKROOT)/System/Library/Frameworks/QuartzCore.framework',
@@ skipping 23 matching lines @@
               'dependencies': [
                 'gputest.gyp:skgputest',
               ],
             }],
           ],
         },
       ],
     }],
   ]
 }