ci(mypy): remove type callable ignores (backport #4253)

[mergify]

This is an automatic backport of pull request #4253 done by Mergify.
Cherry-pick of 0ba3e29 has failed:

On branch mergify/bp/0.61/pr-4253
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Unmerged paths:
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	both modified:   ddtrace/profiling/collector/__init__.py
	both modified:   ddtrace/profiling/collector/memalloc.py
	both modified:   ddtrace/profiling/exporter/http.py

no changes added to commit (use "git add" and/or "git commit -a")

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[Yun-Kim]

Closing as fix is unnecessary.