remove stale comment

The preview feature was moved to stable in v23, and the bug previously preventing us from using the new style was fixed in psf/black#3430

Signed-off-by: BobDotCom <71356958+BobDotCom@users.noreply.github.com>

.pre-commit-config.yaml

@@ -30,7 +30,6 @@ repos:
     rev: 23.1.0
     hooks:
       - id: black
-        # See https://github.com/psf/black/issues/2188#issuecomment-1289317647 for why we can't use the --preview flag.
         args: [--safe, --quiet]
   - repo: https://github.com/Pierre-Sassoulas/black-disable-checker
     rev: v1.1.3