Removing LGTM

[chayim]

The LGTM service is being shut off in two weeks. This pull request aims to remove all references to LGTM. Perhaps LGTM usage should be replaced with codeql, or a repository preferred tool, but IMHO that's the point of a different pull request.

[sonarcloud[bot]]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[codecov[bot]]

Codecov Report

Base: 82.87% // Head: 82.87% // No change to project coverage :thumbsup:

Coverage data is based on head (9c1243b) compared to base (c719394). Patch has no changes to coverable lines.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #180 +/- ## ======================================= Coverage 82.87% 82.87% ======================================= Files 13 13 Lines 1460 1460 ======================================= Hits 1210 1210 Misses 196 196 Partials 54 54 ``` Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=RediSearch). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=RediSearch)

:umbrella: View full report at Codecov.
:loudspeaker: Do you have feedback about the report comment? Let us know in this issue.