message: [CMake] Remove unused CMake variable
diff: @@ -12,7 +12,6 @@ if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
  file(TO_CMAKE_PATH "${LLDB_PATH_TO_CLANG_BUILD}" LLDB_PATH_TO_CLANG_BUILD)
  file(TO_CMAKE_PATH "${LLDB_PATH_TO_SWIFT_BUILD}" LLDB_PATH_TO_SWIFT_BUILD)
  - file(TO_CMAKE_PATH "${LLDB_PATH_TO_CLANG_SOURCE}" LLDB_PATH_TO_CLANG_SOURCE)
  file(TO_CMAKE_PATH "${LLDB_PATH_TO_SWIFT_SOURCE}" LLDB_PATH_TO_SWIFT_SOURCE)
  find_package(LLVM REQUIRED CONFIG
  