Lint

Remove num dim usages in xnnpack flatbuffer #70066

Job	Run time
link-check / lint-xrefs	11s
android-java-format	11s
link-check / lint-urls	12s
link-check / lint-file-size	10s
Get changed files / get-changed-files	3s
lintrunner	45s
lintrunner-mypy	-1s
	1m 31s

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