Remove irrelevant references to legacy git repositories from
compiler identification lines in test-cases.

(Doing so only because it's then easier to search for references which
are actually important and need fixing.)

git-svn-id: https://llvm.org/svn/llvm-project/polly/trunk@351200 91177308-0d34-0410-b5e6-96231b3b80d8
17 files changed