Remove mentions of CI

CI is more of an internal implementation detail and not necessary for
end users to know about.

ChangeLog.md

@@ -29,7 +29,6 @@ SPDX-License-Identifier: BSD-3-Clause
 * Switched from falsify to QuickCheck in the test suite, allowing the
   project to be used in Stackage
   ([link](https://github.com/well-typed/falsify/issues/71)).
-* CI configured to test GHC 9.2.8, 9.4.8, 9.6.5, 9.8.2.
 
 ## 0.1.0.0
 
@@ -47,7 +46,6 @@ SPDX-License-Identifier: BSD-3-Clause
 * A tasty-bench benchmark suite for `applyMerge`.
 * Haddock documentation for `applyMerge`.
 * Support for GHC 9.2, 9.4, 9.6, 9.8.
-* CI testing for GHC 9.2.8, 9.4.8, 9.6.4.
 * Documentation of the library in `README.md` and `docs/ALGORITHM.md`, with
   feedback from _meeeow_ on Haskell Discourse
   ([link](https://discourse.haskell.org/t/apply-merge-lift-a-binary-increasing-function-onto-ordered-lists-and-produce-ordered-output/9269/4)).