Bug 38257: Do not use js_includes.inc in two different files

Bug 38257: Do not use js_includes.inc in two different files

Downloading cart didn't work because js_includes.inc file
was included both in basket.tt and intranet-bottom.inc.
This patch removes related codeline from basket.tt.

To test:
1. Search for items and add one or more search results to your cart.
2. Open cart.
3. Attempt to download items from your cart.
=> Either nothing happens.
4. Apply this patch, restart services if needed.
5. Again attempt to download.
=> Download menu should now work as expected.

Sponsored-by: Koha-Suomi Oy
Signed-off-by: Sam Sowanick <sam.sowanick@corvallisoregon.gov>
Signed-off-by: Aleisha Amohia <aleishaamohia@hotmail.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>