Remove duplicate lines

Author: david22swan

CHANGELOG.md

@@ -1382,11 +1382,4 @@ configuration variables.
 [5.1.0]:https://github.com/puppetlabs/puppetlabs-mysql/compare/5.0.0...5.1.0
 [5.0.0]:https://github.com/puppetlabs/puppetlabs-mysql/compare/4.0.1...5.0.0
 
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-\* *This Changelog was automatically generated by [github_changelog_generator](https://github.com/github-changelog-generator/github-changelog-generator)*
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 \* *This Changelog was automatically generated by [github_changelog_generator](https://github.com/github-changelog-generator/github-changelog-generator)*