Remove CloningDirector and associated code

With the removal of the old landing pad code in r249918, CloningDirector is not
 used anywhere else. NFCI.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@257185 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed