[llvm] [CMake]Remove LLVM_USE_CRT* (PR #66850)

[Martin Storsjö via llvm-commits]

================
@@ -30,7 +30,6 @@ set(LLDB_ENABLE_CURSES OFF CACHE BOOL "")
 set(LLDB_ENABLE_LIBEDIT OFF CACHE BOOL "")
 
 if(WIN32)
-  set(LLVM_USE_CRT_RELEASE "MT" CACHE STRING "")
----------------
mstorsjo wrote:

This case here seems to lack a corresponding setting of `CMAKE_MSVC_RUNTIME_LIBRARY` - I guess we should add that to make this a proper no-op?

https://github.com/llvm/llvm-project/pull/66850