mypy

gh-140920: remove incorrect mentions to `concurrent.futures.interpret… #10009

Job	Run time
Run mypy on Tools/cases_generator	17s
Run mypy on Tools/check-c-api-docs	17s
Run mypy on Lib/test/libregrtest	20s
Run mypy on Tools/build	17s
Run mypy on Lib/_pyrepl	18s
Run mypy on Lib/tomllib	15s
Run mypy on Tools/peg_generator	17s
Run mypy on Tools/jit	18s
Run mypy on Tools/clinic	17s
	2m 36s

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