[LICM] Remove unneeded tracking of whether changes were made. NFC.

"Changed" doesn't actually change within the loop, so there's
no reason to keep track of it - we always return false during
analysis and true after the transformation is made.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@290735 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed