README: remove lgtm badges

lgtm was sunset in Dec 2022. https://github.blog/2022-08-15-the-next-step-for-lgtm-com-github-code-scanning/
This commit is contained in:
luzpaz
2023-01-20 23:25:34 -05:00
committed by Chris Hennes
parent fb65b58007
commit d765405bce

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