Remove deprecated functionality. (#363)

plugins/module_utils/common.py

@@ -323,10 +323,7 @@ class AnsibleDockerClientBase(Client):
             use_ssh_client=self._get_value('use_ssh_client', params['use_ssh_client'], None, False),
         )
 
-        def depr(*args, **kwargs):
-            self.deprecate(*args, **kwargs)
-
-        update_tls_hostname(result, old_behavior=True, deprecate_function=depr, uses_tls=is_using_tls(result))
+        update_tls_hostname(result)
 
         return result
 

plugins/module_utils/util.py

@@ -107,22 +107,9 @@ class DockerBaseClass(object):
 
 def update_tls_hostname(result, old_behavior=False, deprecate_function=None, uses_tls=True):
     if result['tls_hostname'] is None:
-        if old_behavior:
-            result['tls_hostname'] = DEFAULT_TLS_HOSTNAME
-            if uses_tls and deprecate_function is not None:
-                deprecate_function(
-                    'The default value "localhost" for tls_hostname is deprecated and will be removed in community.docker 3.0.0.'
-                    ' From then on, docker_host will be used to compute tls_hostname. If you want to keep using "localhost",'
-                    ' please set that value explicitly.',
-                    version='3.0.0', collection_name='community.docker')
-            return
-
         # get default machine name from the url
         parsed_url = urlparse(result['docker_host'])
-        if ':' in parsed_url.netloc:
-            result['tls_hostname'] = parsed_url.netloc[:parsed_url.netloc.rindex(':')]
-        else:
-            result['tls_hostname'] = parsed_url
+        result['tls_hostname'] = parsed_url.netloc.rsplit(':', 1)[0]
 
 
 def compare_dict_allow_more_present(av, bv):