Revert "ziafazal/WL-328: Multi-Site Comprehensive Theming"

This reverts commit 954dae584a.

openedx/core/lib/tempdir.py

@@ -17,22 +17,3 @@ def cleanup_tempdir(the_dir):
     """Called on process exit to remove a temp directory."""
     if os.path.exists(the_dir):
         shutil.rmtree(the_dir)
-
-
-def mksym_link(src, dest):
-    """
-    Creates a symbolic link which will be deleted when the process ends.
-    :param src: path to source
-    :param dest: path to destination
-    """
-    os.symlink(src, dest)
-    atexit.register(cleanup_symlink, dest)
-
-
-def cleanup_symlink(link_path):
-    """
-    Removes symbolic link for
-    :param link_path:
-    """
-    if os.path.exists(link_path):
-        os.remove(link_path)