Remove Compiler Optimization

• I noticed that the dev app had full compiler optimization enabled - this makes debugging very difficult so since this is a purely dev app, I've reduced the Clang optimization level to NONE

Author: Nightsd01

iOS_SDK/OneSignalDevApp/OneSignalDevApp.xcodeproj/project.pbxproj

@@ -540,6 +540,7 @@
 					"$(inherited)",
 					"$(PROJECT_DIR)",
 				);
+				GCC_OPTIMIZATION_LEVEL = 0;
 				INFOPLIST_FILE = OneSignalNotificationServiceExtension/Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @executable_path/../../Frameworks";
 				OTHER_LDFLAGS = "-ObjC";