pkg_resources: Remove unused and shadowed variables (#4260)

Author: abravalheri

newsfragments/4260.misc.rst

@@ -0,0 +1 @@
+Remove unused ``resources_stream`` ``resource_dir`` and shadowed functions from `pkg_resources` -- by :user:`Avasam`

pkg_resources/__init__.py

@@ -85,9 +85,7 @@
 require = None
 working_set = None
 add_activation_listener = None
-resources_stream = None
 cleanup_resources = None
-resource_dir = None
 resource_stream = None
 set_extraction_path = None
 resource_isdir = None
@@ -491,19 +489,6 @@ def compatible_platforms(provided, required):
     return False
 
 
-def run_script(dist_spec, script_name):
-    """Locate distribution `dist_spec` and run its `script_name` script"""
-    ns = sys._getframe(1).f_globals
-    name = ns['__name__']
-    ns.clear()
-    ns['__name__'] = name
-    require(dist_spec)[0].run_script(script_name, ns)
-
-
-# backward compatibility
-run_main = run_script
-
-
 def get_distribution(dist):
     """Return a current distribution object for a Requirement or string"""
     if isinstance(dist, str):