Bug 33553: Remove unecessary GetCategories calls in templates

This patch removes unnecessary references to
AuthorisedValues.GetCategories:

SET AuthorisedValuesCategories = AuthorisedValues.GetCategories

The AuthorisedValuesCategories variable is not used.

To test, apply the patch and go to Tools -> Patron clubs.

- If necessary, create a club template with "Allow public enrollment"
  enabled.
- Create a new club. The club creation process should work correctly.
- Open a patron account for checkout and confirm that you can enroll the
  patron in the new club via the "Clubs" tab.
- Log in to the OPAC and confirm that you can successfully enroll
  yourself in the new club via the "Clubs" tab on your patron summary
  page.

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>

koha-tmpl/intranet-tmpl/prog/en/modules/clubs/clubs-add-modify.tt

@@ -3,7 +3,6 @@
 [% USE KohaDates %]
 [% USE Branches %]
 [% USE AuthorisedValues %]
-[% SET AuthorisedValuesCategories = AuthorisedValues.GetCategories %]
 [% SET footerjs = 1 %]
 [% INCLUDE 'doc-head-open.inc' %]
 <title>

koha-tmpl/intranet-tmpl/prog/en/modules/clubs/patron-enroll.tt

@@ -1,5 +1,4 @@
 [% USE AuthorisedValues %]
-[% SET AuthorisedValuesCategories = AuthorisedValues.GetCategories %]
 
 <h1>
     Enroll in <em>[% club.name | html %]</em>

koha-tmpl/opac-tmpl/bootstrap/en/modules/clubs/enroll.tt

@@ -1,5 +1,4 @@
 [% USE AuthorisedValues %]
-[% SET AuthorisedValuesCategories = AuthorisedValues.GetCategories %]
 
 <h2>
     Enroll in <em>[% club.name | html %]</em>