mypy ignore errors in tests with assert_called_with()

[patrikspiess]

When assert_called_with() is used for a mocked method we do a # type:ignore because of mypy error has no attribute "assert_called_with" [attr-defined]
Or worse, sometimes we do a # type:ignore on module level (top of the file)

Better solution would be to just ignore the attr-defined:

# mypy: disable-error-code=attr-defined

Hint:
Search for "assert_called_with(" and remove any # type:ignore (either at line or module level)