CallKit iOS xcode9 beta5

#CallKit.framework https://github.com/xamarin/xamarin-macios/pull/2447

diff -ruN /Applications/Xcode9-beta4.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/CallKit.framework/Headers/CXCallDirectoryExtensionContext.h /Applications/Xcode9-beta5.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/CallKit.framework/Headers/CXCallDirectoryExtensionContext.h
--- /Applications/Xcode9-beta4.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/CallKit.framework/Headers/CXCallDirectoryExtensionContext.h	2017-07-14 19:08:18.000000000 -0400
+++ /Applications/Xcode9-beta5.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/CallKit.framework/Headers/CXCallDirectoryExtensionContext.h	2017-07-28 03:53:21.000000000 -0400
@@ -58,15 +58,15 @@
 - (void)addIdentificationEntryWithNextSequentialPhoneNumber:(CXCallDirectoryPhoneNumber)phoneNumber label:(NSString *)label;
 
 /**
- Remove identification entry with the specified phone number and label.
+ Remove identification entry with the specified phone number.
 
  May only be used when `-isIncremental` returns YES, indicating that the request should provide incremental entries and thus may use this
- API to remove a previously-added identification entry.
+ API to remove a previously-added identification entry. Removes all identification entries with the specified phone number, even if
+ multiple identification entries with different labels are present for a single phone number.
 
  @param phoneNumber The identification entry phone number to remove.
- @param label The identification entry label to remove.
  */
-- (void)removeIdentificationEntryWithPhoneNumber:(CXCallDirectoryPhoneNumber)phoneNumber label:(NSString *)label API_AVAILABLE(ios(11.0));
+- (void)removeIdentificationEntryWithPhoneNumber:(CXCallDirectoryPhoneNumber)phoneNumber API_AVAILABLE(ios(11.0));
 
 /**
  Remove all currently-stored identification entries.