Fix xcode project settings

SDWebImage.xcodeproj/project.pbxproj

@@ -837,7 +837,6 @@
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				HEADER_SEARCH_PATHS = Vendors/libwebp/src;
 				IPHONEOS_DEPLOYMENT_TARGET = 5.0;
-				ONLY_ACTIVE_ARCH = YES;
 				PUBLIC_HEADERS_FOLDER_PATH = include/SDWebImage;
 				RUN_CLANG_STATIC_ANALYZER = YES;
 				SDKROOT = iphoneos;