Don't throw archive removal errors at first launch of Mixpanel

I don't want to nitpick, but I feel that throwing three errors at every first launch of Mixpanel is bad form. The Xcode log should be treated as a place where relevant errors get posted. This is similar to not tolerating warnings in your Xcode project.

Don't get me wrong. These errors are important, but what's not elegant is that they appear on every first launch.