Merge pull request #336 from dirkmueller/license_update

Update licenses from SPDX, remove exceptions

Author: danigm

README.md

@@ -3,8 +3,6 @@
 
 ![Build Status](https://github.com/rpm-software-management/spec-cleaner/workflows/Python%20package/badge.svg?branch=master)
 [![Coverage Status](https://coveralls.io/repos/github/rpm-software-management/spec-cleaner/badge.svg?branch=master)](https://coveralls.io/github/rpm-software-management/spec-cleaner?branch=master)
-[![Total alerts](https://img.shields.io/lgtm/alerts/g/rpm-software-management/spec-cleaner.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/rpm-software-management/spec-cleaner/alerts/)
-[![Language grade: Python](https://img.shields.io/lgtm/grade/python/g/rpm-software-management/spec-cleaner.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/rpm-software-management/spec-cleaner/context:python)
 [![pre-commit](https://img.shields.io/badge/pre--commit-enabled-brightgreen?logo=pre-commit&logoColor=white)](https://github.com/pre-commit/pre-commit)
 [![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)