avocado.utils: use default pylintrc configuration from avocado-static-checks

[clebergnu]

Is your feature request related to a problem? Please describe.
Avocado currently uses avocado-static-checks, but for the lint checks use a custom configuration which is much more lax (has many more exceptions).

The autils project has a much more strict configuration file, which is the standard configuraiton supplied by avocado-static-checks.

Describe the solution you'd like
Copying an avocado.utils into autils should not produce any lint errors.