[iOS] Remove code only needed when building for iOS 9.x

[iOS] Remove code only needed when building for iOS 9.x
https://bugs.webkit.org/show_bug.cgi?id=174068

Reviewed by Tim Horton.

Source/bmalloc:

* bmalloc/BPlatform.h:
* bmalloc/VMAllocate.h:
(bmalloc::vmPageSizePhysical):

Source/JavaScriptCore:

* Configurations/FeatureDefines.xcconfig:
* jit/ExecutableAllocator.cpp:
* runtime/Options.cpp:
(JSC::recomputeDependentOptions):

Source/WebCore:

* Configurations/FeatureDefines.xcconfig:
* editing/cocoa/DataDetection.mm:
(WebCore::DataDetection::isDataDetectorLink):
(WebCore::DataDetection::shouldCancelDefaultAction):
(WebCore::constructURLStringForResult):
(WebCore::DataDetection::detectContentInRange):
* page/cocoa/ResourceUsageThreadCocoa.mm:
(WebCore::vmPageSize):
* platform/cocoa/DataDetectorsCoreSoftLink.h:
* platform/cocoa/DataDetectorsCoreSoftLink.mm:
* platform/graphics/FontPlatformData.cpp:
* platform/graphics/FontPlatformData.h:
* platform/graphics/ca/cocoa/PlatformCALayerCocoa.mm:
(layerContentsFormat):
(PlatformCALayerCocoa::updateContentsFormat):
(PlatformCALayerCocoa::backingStoreBytesPerPixel):
* platform/graphics/cg/GraphicsContextCG.cpp:
(WebCore::extendedSRGBColorSpaceRef):
* platform/graphics/cg/PDFDocumentImage.cpp:
(WebCore::PDFDocumentImage::drawPDFPage):
* platform/graphics/cocoa/FontCacheCoreText.cpp:
(WebCore::lookupFallbackFont):
* platform/graphics/cocoa/FontCocoa.mm:
(WebCore::Font::variantCapsSupportsCharacterForSynthesis):
(WebCore::Font::platformWidthForGlyph):
* platform/graphics/cocoa/FontPlatformDataCocoa.mm:
(WebCore::FontPlatformData::FontPlatformData):
(WebCore::FontPlatformData::ctFont):
* platform/graphics/cocoa/IOSurface.mm:
(WebCore::IOSurface::sinkIntoImage):
* platform/graphics/cocoa/WebCoreDecompressionSession.mm:
(WebCore::WebCoreDecompressionSession::setTimebase):
* platform/graphics/ios/FontCacheIOS.mm:
(WebCore::systemFontModificationAttributes):
(WebCore::systemFontDescriptor):
* platform/graphics/mac/FontCustomPlatformData.cpp:
(WebCore::FontCustomPlatformData::supportsFormat):
* platform/ios/LegacyTileGridTile.mm:
(WebCore::LegacyTileGridTile::LegacyTileGridTile):
* platform/ios/PlatformScreenIOS.mm:
(WebCore::screenSupportsExtendedColor):
* platform/ios/RemoteCommandListenerIOS.mm:
(WebCore::RemoteCommandListenerIOS::RemoteCommandListenerIOS):
(WebCore::RemoteCommandListenerIOS::~RemoteCommandListenerIOS):
(WebCore::RemoteCommandListenerIOS::updateSupportedCommands):
* platform/spi/cf/CFNetworkSPI.h:
* platform/spi/cg/CoreGraphicsSPI.h:
* platform/spi/cocoa/DataDetectorsCoreSPI.h:
* platform/spi/cocoa/QuartzCoreSPI.h:
* platform/spi/mac/AVFoundationSPI.h:

Source/WebCore/PAL:

* Configurations/FeatureDefines.xcconfig:

Source/WebKit/mac:

* Configurations/FeatureDefines.xcconfig:

Source/WebKit2:

* Configurations/FeatureDefines.xcconfig:
* Configurations/WebKit.xcconfig:
* Platform/spi/ios/UIKitSPI.h:
* UIProcess/API/Cocoa/WKWebView.mm:
(-[WKWebView dealloc]):
* UIProcess/ios/WKContentViewInteraction.mm:
(-[WKFormInputSession setSuggestions:]):
(-[WKFormInputSession invalidate]):
(-[WKContentView insertTextSuggestion:]):
(contentTypeFromFieldName):
(-[WKContentView textInputTraits]):
(-[WKContentView _dataForPreviewItemController:atPosition:type:]):
* WebProcess/WebPage/ios/WebPageIOS.mm:
(WebKit::WebPage::getPositionInformation):
* config.h:

Source/WTF:

* wtf/Platform.h:
* wtf/mac/DeprecatedSymbolsUsedBySafari.mm:
* wtf/spi/darwin/dyldSPI.h:

Tools:

* TestWebKitAPI/Configurations/FeatureDefines.xcconfig:
* WebKitTestRunner/cocoa/TestControllerCocoa.mm:
(WTR::initializeWebViewConfiguration):
* WebKitTestRunner/ios/HIDEventGenerator.mm:
(-[HIDEventGenerator _createIOHIDEventType:]):

WebKitLibraries:

* WebKitPrivateFrameworkStubs/iOS/9: Removed.
* WebKitPrivateFrameworkStubs/iOS/9/AppSupport.framework: Removed.
* WebKitPrivateFrameworkStubs/iOS/9/AppSupport.framework/AppSupport.tbd: Removed.
* WebKitPrivateFrameworkStubs/iOS/9/AssertionServices.framework: Removed.
* WebKitPrivateFrameworkStubs/iOS/9/AssertionServices.framework/AssertionServices.tbd: Removed.
* WebKitPrivateFrameworkStubs/iOS/9/CorePDF.framework: Removed.
* WebKitPrivateFrameworkStubs/iOS/9/CorePDF.framework/CorePDF.tbd: Removed.
* WebKitPrivateFrameworkStubs/iOS/9/GraphicsServices.framework: Removed.
* WebKitPrivateFrameworkStubs/iOS/9/GraphicsServices.framework/GraphicsServices.tbd: Removed.
* WebKitPrivateFrameworkStubs/iOS/9/IOSurface.framework: Removed.
* WebKitPrivateFrameworkStubs/iOS/9/IOSurface.framework/IOSurface.tbd: Removed.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@219055 268f45cc-cd09-0410-ab3c-d52691b4dbfc