Re-allow SSH due to broken delegation (#40978)

Removes the SSH enforcement because it breaks situations where, for example,
an admin maintains Ansible Tower and another team needs to use Ansible
with the BIG-IP modules, but the Tower admin does not want to install
the F5-SDK on the Ansible Tower instance.

In this situation, the user needs to delegate the execution of the BIG-IP
module to another linux host that does have the dependencies installed.

Usually this is done with delegation, often over SSH. Limiting the SSH
connection here prevents this from working.

(cherry picked from commit 8bccd0830b)

lib/ansible/plugins/action/bigip.py

@@ -80,8 +80,6 @@ class ActionModule(_ActionModule):
                     }
 
                 task_vars['ansible_socket'] = socket_path
-        else:
-            return {'failed': True, 'msg': 'Connection type %s is not valid for this module' % self._play_context.connection}
 
         if (self._play_context.connection == 'local' and transport == 'cli') or self._play_context.connection == 'network_cli':
             # make sure we are in the right cli context which should be

lib/ansible/plugins/action/bigiq.py

@@ -78,8 +78,6 @@ class ActionModule(_ActionModule):
                                    'https://docs.ansible.com/ansible/network_debug_troubleshooting.html#unable-to-open-shell'}
 
                 task_vars['ansible_socket'] = socket_path
-        else:
-            return {'failed': True, 'msg': 'Connection type %s is not valid for this module' % self._play_context.connection}
 
         if (self._play_context.connection == 'local' and transport == 'cli') or self._play_context.connection == 'network_cli':
             # make sure we are in the right cli context which should be