It seems that Apples's latest update requires deletion of binary files. According to google, the latest iOS SDK will handle that for you.

Last week, Apple updated their app submission policy requiring that resource bundles not include binaries. In order for your apps to meet these new requirements, you must either replace your existing Google+ iOS SDK with the updated 1.7.1 Google+ iOS SDK that has the files removed or remove the following files from the GooglePlus bundle:

GooglePlus.bundle/GPPSignIn3PResources
GooglePlus.bundle/GPPCommonSharedResources.bundle/GPPCommonSharedResources
GooglePlus.bundle/GPPShareboxSharedResources.bundle/GPPShareboxSharedResources
Apple iOS Developers Using Google iOS SDK Should Update To 1.7.1 [googledevelopers.blogspot.com]