mypy

Remove redundant pycore_optimizer.h includes (#143184) #18756

Job	Run time
Run mypy on Lib/test/libregrtest	18s
Run mypy on Lib/tomllib	16s
Run mypy on Tools/cases_generator	19s
Run mypy on Tools/clinic	17s
Run mypy on Tools/build	18s
Run mypy on Tools/check-c-api-docs	19s
Run mypy on Lib/_pyrepl	18s
Run mypy on Tools/jit	19s
Run mypy on Tools/peg_generator	18s
	2m 42s

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