Turn off swift 3 objc inference

Author: frankus

Apptentive/Apptentive.xcodeproj/project.pbxproj

@@ -2442,7 +2442,6 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OBJC_BRIDGING_HEADER = "ApptentiveTests/ApptentiveTests-Bridging-Header.h";
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_SWIFT3_OBJC_INFERENCE = On;
 			};
 			name = Debug;
 		};
@@ -2457,7 +2456,6 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.apptentive.ApptentiveTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OBJC_BRIDGING_HEADER = "ApptentiveTests/ApptentiveTests-Bridging-Header.h";
-				SWIFT_SWIFT3_OBJC_INFERENCE = On;
 			};
 			name = Release;
 		};