Remove obsolete bitcode upgrader

Change-Id: Icabb1211df22c0005192f16293ffd613e185684e

Author: aratajew

IGC/AdaptorOCL/CMakeLists.txt

@@ -8,8 +8,6 @@ include_directories("${CMAKE_CURRENT_SOURCE_DIR}")
 #include_directories("${CMAKE_CURRENT_SOURCE_DIR}/ocl_igc_shared/executable_format")
 
   set(IGC_BUILD__SRC__AdaptorOCL
-      "${CMAKE_CURRENT_SOURCE_DIR}/Upgrader/llvm${LLVM_VERSION_MAJOR}/Upgrader.cpp"
-      "${CMAKE_CURRENT_SOURCE_DIR}/Upgrader/llvm${LLVM_VERSION_MAJOR}/BitcodeReader.cpp"
       "${CMAKE_CURRENT_SOURCE_DIR}/UnifyIROCL.cpp"
       "${CMAKE_CURRENT_SOURCE_DIR}/MoveStaticAllocas.cpp"
       "${CMAKE_CURRENT_SOURCE_DIR}/cmc.cpp"