Fix cmake build.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77649 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/CMakeLists.txt

@@ -40,7 +40,6 @@ add_llvm_library(LLVMCodeGen
   PreAllocSplitting.cpp
   PrologEpilogInserter.cpp
   PseudoSourceValue.cpp
-  RegAllocBigBlock.cpp
   RegAllocLinearScan.cpp
   RegAllocLocal.cpp
   RegAllocPBQP.cpp