Disable 'Zombie Objects' diagnostics for tvOS scheme (#4572)

AFNetworking.xcodeproj/xcshareddata/xcschemes/AFNetworking tvOS.xcscheme

@@ -102,13 +102,6 @@
             isEnabled = "YES">
          </EnvironmentVariable>
       </EnvironmentVariables>
-      <AdditionalOptions>
-         <AdditionalOption
-            key = "NSZombieEnabled"
-            value = "YES"
-            isEnabled = "YES">
-         </AdditionalOption>
-      </AdditionalOptions>
    </LaunchAction>
    <ProfileAction
       buildConfiguration = "Release"