Bug 19796 - Fix doubled up subscription info on OPAC detail page

Bug 19796 - Fix doubled up subscription info on OPAC detail page

The info "Subscription from..." is showing twice on the subscription
tab on the OPAC detail page because of a bad merge. This patch removes
the doubled up information.

To test:
- Add a subscription
- Search for the record in the OPAC
- Switch to the subscription tab
- Verify that the 'Subscription from...' line is repeated
- Apply patch
- Verify only one line remains and nothing is missing

Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>