Revert "xcode 5.1 warning fixes"

This reverts commit bdceb587857e3b6deaa7faee9a64f7288402f465.

This caused our Cocoapod to fail "pod spec lint". We will resolve
this further when @alex-hofsteede returns.
Revert "stop warnings in podspec when using MIN() macro"

This reverts commit 925222023efc3cc128d8035e51c2187cc8defa2f.

same as last revert commit