message: Deletes unnecessary lines of code
  The rest of this function changed sufficiently that these lines of code are not doing anything and can cause bugs.
diff: @@ -890,11 +890,6 @@ def _GatherGrad(op, grad):
  # Build appropriately shaped IndexedSlices
  handle = op.inputs[0]
  indices = op.inputs[1]
  - if context.in_graph_mode():
  - # Walk graph back until the original handle is found.
  - # TODO(apassos): implement this for EAGER mode.
  - while handle.op.type != "VarHandleOp":
  - handle = handle.op.inputs[0]
  params_shape = gen_resource_variable_ops.variable_shape(handle)
  size = array_ops.expand_dims(array_ops.size(indices), 0)
  values_shape = array_ops.concat([size, params_shape[1:]], 0)
  