message: Fix linking error of CoreFoundation for iOS
  It appears linking error while building iOS package for arm64 only.
  tensorflow/contrib/makefile/build_all_ios.sh -a arm64
diff: @@ -917,10 +917,8 @@ ifeq ($(TARGET),OSX)
  endif
  endif
  ifeq ($(TARGET),IOS)
  - ifeq ($(IOS_ARCH),X86_64)
  HOST_LDOPTS += -framework CoreFoundation
  endif
  -endif
  # Runs proto_text to generate C++ source files from protos.
  $(PROTO_TEXT): $(PROTO_TEXT_OBJS) $(PROTO_TEXT_PB_H_FILES)
  