Revert "Merge pull request #18057 from jketema/codeql-cli-2.19.4"

This reverts commit ed922f6, reversing
changes made to aa4cc72.

Author: MathiasVP

cpp/ql/lib/change-notes/released/2.1.1.md

@@ -1,3 +1,5 @@
 ## 2.1.1
 
-No user-facing changes.
+### Minor Analysis Improvements
+
+* The `Guards` library (`semmle.code.cpp.controlflow.Guards`) has been improved to recognize more guard conditions. Additionally, the guards library no longer considers guards in static local initializers or global initializers as `GuardCondition`s.