fix: removed filter on non-existent column in grievance chart (#501)

hrms/hr/dashboard_chart/grievance_type/grievance_type.json

@@ -6,15 +6,14 @@
  "docstatus": 0,
  "doctype": "Dashboard Chart",
  "document_type": "Employee Grievance",
- "dynamic_filters_json": "[[\"Employee\",\"company\",\"=\",\"frappe.defaults.get_user_default(\\\"Company\\\")\"]]",
  "filters_json": "[[\"Employee Grievance\",\"docstatus\",\"=\",\"1\",false]]",
  "group_by_based_on": "grievance_type",
  "group_by_type": "Count",
  "idx": 0,
  "is_public": 1,
  "is_standard": 1,
  "last_synced_on": "2022-08-21 13:08:57.019388",
- "modified": "2022-08-21 13:40:40.415600",
+ "modified": "2023-09-05 12:03:40.415600",
  "modified_by": "Administrator",
  "module": "HR",
  "name": "Grievance Type",
@@ -30,4 +29,4 @@
  "use_report_chart": 0,
  "value_based_on": "",
  "y_axis": []
-}
+}