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

This reverts commit 47e36266e93de9c34ba3028951a58124864bb2b4.

This change broke some arm8/arm7 build bots because int and void * have
the same size.

Co-authored-by: einvbri <vince.a.bridgers@ericsson.com>