Remove invalid pytest option in setup.cfg, improve readability of test result

[TGoddessana]

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Description

If you run ./runtests.py in the current package, you'll get a warning like this. (unknown config option: testspath)

A patch was made in this commit to remove the warning, but it appears to have been reverted back here.

I've also added the -v option to verbosely display the results of running ./runtests.
(If this is an unnecessary change, I'll revert it).

(before -v option)

(after added -v option)

This change does not affect the results of the -q option.
(with -q option)

References

as you can see, testspath is not valid pytest option and should use testpaths