code: def remove_cache(self, param):
      if self.has_cache and param in self.cache:
          del self.cache[param]
  
imports: import contextlib
  import warnings
  import sys
  import torch
  from .None import utils
  from .opt import OptimWrapper
  from .scaler import LossScaler
  from ._amp_state import _amp_state, master_params, maybe_print
label_desc: Use image node_id 11 for calling the AmpHandle obj's underlying member method code with example usage: obj.remove_cache(param) without return types