chore: remove acr trusted service preview flag

Author: northtyphoon

src/azure-cli/azure/cli/command_modules/acr/_params.py

@@ -113,7 +113,7 @@ def load_arguments(self, _):  # pylint: disable=too-many-statements
             c.argument('default_action', arg_type=get_enum_type(DefaultAction),
                        help='Default action to apply when no rule matches. Only applicable to Premium SKU.')
             c.argument('public_network_enabled', get_three_state_flag(), help="Allow public network access for the container registry.{suffix}".format(suffix=default_allow_suffix))
-            c.argument('allow_trusted_services', get_three_state_flag(), is_preview=True, help="Allow trusted Azure Services to access network restricted registries. For more information, please visit https://aka.ms/acr/trusted-services.{suffix}".format(suffix=default_allow_suffix))
+            c.argument('allow_trusted_services', get_three_state_flag(), help="Allow trusted Azure Services to access network restricted registries. For more information, please visit https://aka.ms/acr/trusted-services.{suffix}".format(suffix=default_allow_suffix))
 
     for scope in ['acr create', 'acr update']:
         with self.argument_context(scope, arg_group="Permissions and Role Assignment") as c: