Revert r325001: [CallSiteSplitting] Support splitting of blocks with instrs before call.

Due to memsan not being happy with the array of ValueToValue maps.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@325009 91177308-0d34-0410-b5e6-96231b3b80d8
7 files changed