Fixed #30169 -- Removed SAP SQL Anywhere from "3rd party database backends" as it's inactive.

docs/ref/databases.txt

@@ -937,7 +937,6 @@ Using a 3rd-party database backend
 In addition to the officially supported databases, there are backends provided
 by 3rd parties that allow you to use other databases with Django:
 
-* `SAP SQL Anywhere`_
 * `IBM DB2`_
 * `Microsoft SQL Server`_
 * Firebird_
@@ -948,7 +947,6 @@ vary considerably. Queries regarding the specific capabilities of these
 unofficial backends, along with any support queries, should be directed to
 the support channels provided by each 3rd party project.
 
-.. _SAP SQL Anywhere: https://github.com/sqlanywhere/sqlany-django
 .. _IBM DB2: https://pypi.org/project/ibm_db/
 .. _Microsoft SQL Server: https://pypi.org/project/django-pyodbc-azure/
 .. _Firebird: https://github.com/maxirobaina/django-firebird