LP1748649: Don't show bib call # in show_details mode

LP1748649: Don't show bib call # in show_details mode

Using "show more details" in the public catalog displays
a list of items associated with each bib in the results list --
and their call numbers. Consequently, when in that mode, it
is not necessary to separately display one of the bib call numbers
in the bib summary on the results page; this patch removes it.

Signed-off-by: Jane Sandberg <sandbej@linnbenton.edu>
Signed-off-by: Cesar Velez <cesar.velez@equinoxinitiative.org>
Signed-off-by: Galen Charlton <gmc@equinoxinitiative.org>