Better scanning for module names, now includes namespace packages and stubs

jedi/evaluate/gradual/stub_context.py

@@ -1,5 +1,3 @@
-import os
-
 from jedi.evaluate.base_context import ContextWrapper
 from jedi.evaluate.context.module import ModuleContext
 from jedi.evaluate.filters import ParserTreeFilter, \
@@ -61,17 +59,6 @@ class StubModuleContext(ModuleContext):
         for f in filters:
             yield f
 
-    def _iter_module_names(self, paths):
-        for path in paths:
-            dirs = os.listdir(path)
-            for name in dirs:
-                if os.path.isdir(os.path.join(path, name)):
-                    if name != '__pycache__':
-                        yield name
-                if name.endswith('.pyi'):
-                    if name != '__init__.pyi':
-                        yield name[:-4]
-
 
 class TypingModuleWrapper(StubModuleContext):
     def get_filters(self, *args, **kwargs):