.github/labeler: remove "backport release-24.11" auto label

24.11 is unmaintained.

Changed files
-7
.github
-7
.github/labeler-no-sync.yml
···
- doc/**/*
- nixos/doc/**/*
-
"backport release-24.11":
-
- any:
-
- changed-files:
-
- any-glob-to-any-file:
-
- .github/workflows/*
-
- ci/**/*.*
-
"backport release-25.05":
- any:
- changed-files: