Nuke the old JIT.

I am sure we will be finding bits and pieces of dead code for years to
come, but this is a good start.

Thanks to Lang Hames for making MCJIT a good replacement!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215111 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/CMakeLists.txt

@@ -27,7 +27,6 @@ add_llvm_library(LLVMCodeGen
   InlineSpiller.cpp
   InterferenceCache.cpp
   IntrinsicLowering.cpp
-  JITCodeEmitter.cpp
   JumpInstrTables.cpp
   LLVMTargetMachine.cpp
   LatencyPriorityQueue.cpp