Remove Jenkins badges, authentication is now required

Author: uhafner

README.md

@@ -1,7 +1,6 @@
 # Static Analysis Model and Parsers Library
 
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-[![Jenkins](https://ci.jenkins.io/job/Plugins/job/analysis-model/job/main/badge/icon?subject=Jenkins%20CI)](https://ci.jenkins.io/job/Plugins/job/analysis-model/job/main/)
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 [![CodeQL](https://github.com/jenkinsci/analysis-model/workflows/CodeQL/badge.svg)](https://github.com/jenkinsci/analysis-model/actions/workflows/codeql.yml)
 [![Line Coverage](https://raw.githubusercontent.com/jenkinsci/analysis-model/main/badges/line-coverage.svg)](https://github.com/jenkinsci/analysis-model/actions/workflows/quality-monitor-comment.yml)