[clang] [llvm] [Clang] Reduce the number of ways we have to print a codepoint. (PR #206990)

[Corentin Jabot via cfe-commits]

================
@@ -4674,7 +4674,7 @@ def warn_comparison_unicode_mixed_types
 
 def warn_comparison_unicode_mixed_types_constant
     : Warning<"comparing values of different Unicode code unit types %0 and %1 "
-              "compares unrelated code units '%2' and '%3'">,
+              "compares unrelated code units %2 and %3">,
----------------
cor3ntin wrote:

no, this is used when comparing code units that do not represent code points

https://github.com/llvm/llvm-project/pull/206990