Revert tests

Author: zooba

Lib/importlib/_bootstrap_external.py

@@ -947,8 +947,6 @@ def _cache_bytecode(self, source_path, bytecode_path, data):
 
     def set_data(self, path, data, *, _mode=0o666):
         """Write bytes data to a file."""
-        # DO NOT MERGE - just testing unconditionally skipping this path
-        return
         parent, filename = _path_split(path)
         path_parts = []
         # Figure out what directories are missing.