Remove old ChangeLog entries

Author: sebastianbergmann

ChangeLog.md

@@ -329,37 +329,6 @@ All notable changes are documented in this file using the [Keep a CHANGELOG](htt
 
 * This component is no longer supported on PHP 7.1
 
-## [6.1.4] - 2018-10-31
-
-### Fixed
-
-* [#650](https://github.com/sebastianbergmann/php-code-coverage/issues/650): Wasted screen space in HTML code coverage report
-
-## [6.1.3] - 2018-10-23
-
-### Changed
-
-* Use `^3.1` of `sebastian/environment` again due to [regression](https://github.com/sebastianbergmann/environment/issues/31)
-
-## [6.1.2] - 2018-10-23
-
-### Fixed
-
-* [#645](https://github.com/sebastianbergmann/php-code-coverage/pull/645): Crash that can occur when php-token-stream parses invalid files
-
-## [6.1.1] - 2018-10-18
-
-### Changed
-
-* This component now allows `^4` of `sebastian/environment`
-
-## [6.1.0] - 2018-10-16
-
-### Changed
-
-* Class names are now abbreviated (unqualified name shown, fully qualified name shown on hover) in the file view of the HTML report
-* Update HTML report to Bootstrap 4
-
 [9.2.7]: https://github.com/sebastianbergmann/php-code-coverage/compare/9.2.6...9.2
 [9.2.6]: https://github.com/sebastianbergmann/php-code-coverage/compare/9.2.5...9.2.6
 [9.2.5]: https://github.com/sebastianbergmann/php-code-coverage/compare/9.2.4...9.2.5
@@ -400,9 +369,3 @@ All notable changes are documented in this file using the [Keep a CHANGELOG](htt
 [7.0.2]: https://github.com/sebastianbergmann/php-code-coverage/compare/7.0.1...7.0.2
 [7.0.1]: https://github.com/sebastianbergmann/php-code-coverage/compare/7.0.0...7.0.1
 [7.0.0]: https://github.com/sebastianbergmann/php-code-coverage/compare/6.1.4...7.0.0
-[6.1.4]: https://github.com/sebastianbergmann/php-code-coverage/compare/6.1.3...6.1.4
-[6.1.3]: https://github.com/sebastianbergmann/php-code-coverage/compare/6.1.2...6.1.3
-[6.1.2]: https://github.com/sebastianbergmann/php-code-coverage/compare/6.1.1...6.1.2
-[6.1.1]: https://github.com/sebastianbergmann/php-code-coverage/compare/6.1.0...6.1.1
-[6.1.0]: https://github.com/sebastianbergmann/php-code-coverage/compare/6.0...6.1.0
-