fix #13714: only the first unused templated function is not being checked with --no-check-unused-templates by ludviggunne · Pull Request #7802 · cppcheck-opensource/cppcheck

It is approved, so let's merge it and not add fixes for the other shortcomings to this.

We should merge #7800 and #7803 before fixing more as it might provide better feedback on the changes.

It is approved, so let's merge it and not add fixes for the other shortcomings to this.

Having the fixes separate would also be better if we need to bisect things in case something went awry.