Many binary operations defiend in CodeAssembler check for constants
in the inputs and apply simplification if applicable. This is now
performed by the MachineOperatorReducer in a uniform way. To avoid
code duplication, the premature optimizations in CodeAssembler have
been removed in this CL.

Bug: v8:10021
Change-Id: I9b99f05e4f9ab31ff933f22d62674ee80efee8ac
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1995277Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Nico Hartmann <nicohartmann@chromium.org>
Cr-Commit-Position: refs/heads/master@{#65707}