Remove an errant outer loop that contains nothing but an inner loop over exactly...

Remove an errant outer loop that contains nothing but an inner loop over exactly the same elements. While no functionality is change intended (and hence there are no changes to tests), you don't want to skip this revision if bisecting for errors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216864 91177308-0d34-0410-b5e6-96231b3b80d8