Duplicate time format suggestions if locale's time format is the same as default time format

[waclawjacek]

The default time format is set to “H:i” in the Polish translation, but this results in duplicate “H:i” entries on the settings screen (see: attachment). Happens in version 3.4 and earlier.

Andrew Nacin's suggestion on "WP Polyglots":

A simple array_unique() should be enough there, on both $time_formats and $date_formats.

[SergeyBiryukov]

Thanks, I had it on my list as well.

[nacin]

In [22299]:

Don't show the same time or date format twice on the General Settings page. This can occur if a translated format is the same as an existing default format. fixes #21060.