iOS silence GLES deprecation warnings

Author: dimitre

libs/openFrameworksCompiled/project/ios/CoreOF.xcconfig

@@ -49,7 +49,7 @@ OF_CORE_FRAMEWORKS = -framework AudioToolbox -framework Accelerate -framework AV
 //OF_CORE_LIBS = $(inherited) $(LIB_BOOST)
 //OF_CORE_HEADERS = $(inherited) $(HEADER_BOOST)
 
-
+GCC_PREPROCESSOR_DEFINITIONS = $(inherited) GLES_SILENCE_DEPRECATION=1
 
 //COMPILER SETTINGS WHICH CAN BE OVERRIDDEN BY XCODE BUILD SETTINGS
 CLANG_ENABLE_OBJC_WEAK = YES