examples/test: remove deprecated GCC flag

Examples_OSX/test/test.xcodeproj/project.pbxproj

@@ -219,7 +219,6 @@
 				GCC_C_LANGUAGE_STANDARD = c99;
 				GCC_DYNAMIC_NO_PIC = NO;
 				GCC_ENABLE_FIX_AND_CONTINUE = YES;
-				GCC_MODEL_TUNING = G5;
 				GCC_OPTIMIZATION_LEVEL = 0;
 				INFOPLIST_FILE = Info.plist;
 				INSTALL_PATH = "$(HOME)/Applications";
@@ -250,7 +249,6 @@
 				FRAMEWORK_SEARCH_PATHS_QUOTED_FOR_TARGET_1 = "\"$(SRCROOT)/../../build/Debug\"";
 				GCC_C_LANGUAGE_STANDARD = c99;
 				GCC_GENERATE_DEBUGGING_SYMBOLS = NO;
-				GCC_MODEL_TUNING = G5;
 				INFOPLIST_FILE = Info.plist;
 				INSTALL_PATH = "$(HOME)/Applications";
 				LD_FLAGS_LIBINTL = "-dylib_file @loader_path/../lib/vlc_libintl.dylib:$(VLC_FRAMEWORK)/lib/vlc_libintl.dylib";