[beta] Revert performing basic const checks in typeck on stable

[oli-obk]

beta backport of #154930

approval in #t-compiler/backports > #154930: beta-nominated @ 💬

the nightly PR hasn't landed yet, but it will, and this is a trivial revert that only affects diagnostics

[rustbot]

This PR modifies tests/ui/issues/. If this PR is adding new tests to tests/ui/issues/,
please refrain from doing so, and instead add it to more descriptive subdirectories.

This PR changes a file inside tests/crashes. If a crash was fixed, please move into the corresponding ui subdir and add 'Fixes #' to the PR description to autoclose the issue upon merge.

[rustbot]

r? @chenyukang

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[rustbot]

⚠️ Warning ⚠️

• Pull requests are usually filed against the main branch for this repo, but this one is against beta. Please double check that you specified the right target!

[lqd]

t-types, and the t-compiler voting topic, are in favor. This should be on today's t-compiler agenda to accept, and I expect it to go through. r=me when that happens, should you need it

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[cuviper]

I'll roll this into #154999.