mypy

gh-141984: Remove accidental merge markers (GH-150517) #10605

Job	Run time
Run mypy on Lib/test/libregrtest	23s
Run mypy on Tools/cases_generator	20s
Run mypy on Tools/check-c-api-docs	18s
Run mypy on Lib/tomllib	18s
Run mypy on Lib/_pyrepl	21s
Run mypy on Tools/jit	22s
Run mypy on Tools/clinic	20s
Run mypy on Tools/build	19s
Run mypy on Tools/peg_generator	21s
	3m 2s

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