Fix for Bug 4922 - Item display tries to show serial info for titles with series...

Fix for Bug 4922 - Item display tries to show serial info for titles with series tags

Removing check for "is this a serial record" when displaying enumchron
information. This check evaluates as true for all biblio records which
have a series title, so it's an inaccurate determiner of whether
enumchron information should be displayed. The script already
checks for the presence of enumchron data, so that will display
anyway if it exists.

Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>
Signed-off-by: Galen Charlton <gmcharlt@gmail.com>