code: def test_pat019_patch_remove():
      p = Patch()
  
      p.remove("item")
      data = patch_to_dict(p)
      assert data["operations"][0] == {
          "operation": "Remove",
          "location": [],
          "params": {"value": "item"},
      }
  
imports: import json
  import pytest
  from dash import Patch
  from dash._utils import to_json
label_desc: Use image node_id 20 for calling a global function with example usage: test_pat019_patch_remove() without return types