Bug 14382: [QA Follow-up] Bad regex alarm

Bug 14382: [QA Follow-up] Bad regex alarm

The regex /|date>>/ will match much more than you like :)
The unescaped pipe is bad, but you also need to remove the >> because
the split a few lines above it removes them already.

This allows you to recover from an error like this one, running another
report with a string parameter:
The given date (india%) does not match the date format (us) at
Koha/DateUtils.pm line 144.

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Amended for possible spaces around the word date.