yamllint: Drop excluding quoted values with ',' from checks

Strings with commas were excluded from checks because yamllint had false
positives for flow style maps and sequences which need quotes when
values contain commas. This issue has been fixed as of the 1.34 release,
so drop the work-around.

Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20240426195438.2771968-1-robh@kernel.org


Signed-off-by: Rob Herring (Arm) <robh@kernel.org>