code: def _unset_ground_truth_backend():
      global CURRENT_GROUND_TRUTH_BACKEND
      CURRENT_GROUND_TRUTH_BACKEND = _Notsetval
  
file_path: ivy/ivy_tests/test_ivy/helpers/globals.py
imports: from dataclasses import dataclass
  from .pipeline_helper import get_frontend_config
label_desc: Use image node_id 13 for calling a global function with example usage: _unset_ground_truth_backend() without return types