DebugIR: Delete -debug-ir

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222945 91177308-0d34-0410-b5e6-96231b3b80d8
DebugIR: Remove empty directories from SVN

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222946 91177308-0d34-0410-b5e6-96231b3b80d8