Drop sqlalchemy 2x job

This jobs is only run in master. The current definition is causing
the following warning in zuul config.

  All regular expressions must conform to RE2 syntax, but an
  expression using the deprecated Perl-style syntax has been detected.
  Adjust the configuration to conform to RE2 syntax.

  The RE2 syntax error is: invalid perl operator: (?!

Change-Id: I4e26c2996c9e7e6a6a6af1697b118b0441d941f4

.zuul.yaml

@@ -81,19 +81,6 @@
     parent: designate-bind9
     nodeset: devstack-single-node-centos-9-stream
 
-- job:
-    name: designate-bind9-sqlalchemy-2x
-    parent: designate-bind9
-    description: |
-      Run tempest tests with main branch of SQLAlchemy, alembic and oslo.db.
-    # The job only tests the latest and shouldn't be run on the stable branches
-    branches: ^(?!stable)
-    required-projects:
-      - name: openstack/oslo.db
-    vars:
-      devstack_localrc:
-        USE_SQLALCHEMY_LATEST: true
-
 - job:
     name: designate-pdns4
     post-run: playbooks/designate-pdns4/post.yaml
@@ -189,22 +176,6 @@
     vars:
       tox_envlist: dnspython-latest
 
-# Temporary job until SQLAlchemy 2.0 is no longer blocked by upper-requirements
-- job:
-    name: designate-tox-py310-with-sqlalchemy-2x
-    parent: openstack-tox-py310
-    description: |
-      Run unit tests with main branch of SQLAlchemy, alembic and oslo.db.
-      Takes advantage of the base tox job's install-siblings feature.
-    # The job only tests the latest and shouldn't be run on the stable branches
-    branches: ^(?!stable)
-    required-projects:
-      - name: github.com/sqlalchemy/sqlalchemy
-        override-checkout: main
-      - name: github.com/sqlalchemy/alembic
-        override-checkout: main
-      - name: openstack/oslo.db
-
 - project-template:
     name: designate-devstack-jobs
     queue: designate