[clang] Revert "[Sema] Add check for bitfield assignments to integral types" (PR #68963)

[via cfe-commits]

cor3ntin wrote:

Original PR - https://github.com/llvm/llvm-project/pull/68276 
FYI you do not need to make a PR to revert a change that breaks the build - especially your own

https://github.com/llvm/llvm-project/pull/68963