[analyzer] NFC: MoveChecker: Refactor tests to use -verify=prefix.

This -verify=prefix feature is quite underrated.

Differential Revision: https://reviews.llvm.org/D60732


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@358719 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed