Remove inspect.Parameter compatibility

jedi/inference/gradual/annotation.py

@@ -6,10 +6,10 @@ as annotations in future python versions.
 """
 
 import re
+from inspect import Parameter
 
 from parso import ParserSyntaxError, parse
 
-from jedi._compatibility import force_unicode, Parameter
 from jedi.inference.cache import inference_state_method_cache
 from jedi.inference.base_value import ValueSet, NO_VALUES
 from jedi.inference.gradual.base import DefineGenericBaseClass, GenericClass