Revert "StripDebugInfo: uses isa<DbgInfoIntrinsic> instead of matching against llvm.dbg.* (NFC)"

This reverts commit r269537, was not ready to be commited and went through by mistake

From: Mehdi Amini <mehdi.amini@apple.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@269539 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed