Remove description from junos_l3_interfaces (#60058)

The description will be just handled by the _interfaces module, this one
will be just dealing with l3 config options.

lib/ansible/module_utils/network/junos/argspec/l3_interfaces/l3_interfaces.py

@@ -28,7 +28,6 @@ class L3_interfacesArgs(object):  # pylint: disable=R0903
                                              {'address': {'type': 'str'}},
                                              'type': 'list'},
                                     'name': {'required': True, 'type': 'str'},
-                                    'description': {'type': 'str'},
                                     'unit': {'type': 'int', 'default': 0}
                                 },
                                 'type': 'list'},

lib/ansible/modules/network/junos/junos_l3_interfaces.py

@@ -59,10 +59,6 @@ options:
           - Full name of interface, e.g. ge-0/0/1
         type: str
         required: True
-      description:
-        description:
-          - Description about the interface, like an alias
-        type: str
       unit:
         description:
           - Logical interface number. Value of C(unit) should be of type integer