Remove a few imports

jedi/inference/imports.py

@@ -15,13 +15,10 @@ import os
 
 from parso.python import tree
 from parso.tree import search_ancestor
-from parso import python_bytes_to_unicode
 
-from jedi._compatibility import (FileNotFoundError, ImplicitNSInfo,
-                                 force_unicode, unicode)
+from jedi._compatibility import ImplicitNSInfo, force_unicode
 from jedi import debug
 from jedi import settings
-from jedi.file_io import KnownContentFileIO, FileIO
 from jedi.parser_utils import get_cached_code_lines
 from jedi.inference import sys_path
 from jedi.inference import helpers