Leave policy assignment patch error

[centaur78]

hi @Anurag810 & @nabinhait

Got the below error while bench updating ... PR frappe/erpnext#23112

Migrating site1.local
Executing erpnext.patches.v13_0.create_leave_policy_assignment_based_on_employee_current_leave_policy in site1.local (_1bd3e0294da19198)
Traceback (most recent call last):
  File "/home/frappe/frappe-bench/apps/frappe/frappe/modules/utils.py", line 205, in load_doctype_module
    doctype_python_modules[key] = frappe.get_module(module_name)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/__init__.py", line 877, in get_module
    return importlib.import_module(modulename)
  File "/usr/lib/python3.6/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 994, in _gcd_import
  File "<frozen importlib._bootstrap>", line 971, in _find_and_load
  File "<frozen importlib._bootstrap>", line 941, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "<frozen importlib._bootstrap>", line 994, in _gcd_import
  File "<frozen importlib._bootstrap>", line 971, in _find_and_load
  File "<frozen importlib._bootstrap>", line 953, in _find_and_load_unlocked
ModuleNotFoundError: No module named 'frappe.core.doctype.leave_policy_assignment'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/usr/lib/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/utils/bench_helper.py", line 99, in <module>
    main()
  File "/home/frappe/frappe-bench/apps/frappe/frappe/utils/bench_helper.py", line 18, in main
    click.Group(commands=commands)(prog_name='bench')
  File "/home/frappe/frappe-bench/env/lib/python3.6/site-packages/click/core.py", line 764, in __call__
    return self.main(*args, **kwargs)
  File "/home/frappe/frappe-bench/env/lib/python3.6/site-packages/click/core.py", line 717, in main
    rv = self.invoke(ctx)
  File "/home/frappe/frappe-bench/env/lib/python3.6/site-packages/click/core.py", line 1137, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/frappe/frappe-bench/env/lib/python3.6/site-packages/click/core.py", line 1137, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/frappe/frappe-bench/env/lib/python3.6/site-packages/click/core.py", line 956, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/home/frappe/frappe-bench/env/lib/python3.6/site-packages/click/core.py", line 555, in invoke
    return callback(*args, **kwargs)
  File "/home/frappe/frappe-bench/env/lib/python3.6/site-packages/click/decorators.py", line 17, in new_func
    return f(get_current_context(), *args, **kwargs)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/commands/__init__.py", line 26, in _func
    ret = f(frappe._dict(ctx.obj), *args, **kwargs)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/commands/site.py", line 298, in migrate
    skip_search_index=skip_search_index
  File "/home/frappe/frappe-bench/apps/frappe/frappe/migrate.py", line 67, in migrate
    frappe.modules.patch_handler.run_all(skip_failing)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/modules/patch_handler.py", line 41, in run_all
    run_patch(patch)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/modules/patch_handler.py", line 30, in run_patch
    if not run_single(patchmodule = patch):
  File "/home/frappe/frappe-bench/apps/frappe/frappe/modules/patch_handler.py", line 71, in run_single
    return execute_patch(patchmodule, method, methodargs)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/modules/patch_handler.py", line 91, in execute_patch
    frappe.get_attr(patchmodule.split()[0] + ".execute")()
  File "/home/frappe/frappe-bench/apps/erpnext/erpnext/patches/v13_0/create_leave_policy_assignment_based_on_employee_current_leave_policy.py", line 20, in execute
    create_assignment(employee.name, employee.leave_policy)
  File "/home/frappe/frappe-bench/apps/erpnext/erpnext/patches/v13_0/create_leave_policy_assignment_based_on_employee_current_leave_policy.py", line 56, in create_assignment
    lpa = frappe.new_doc("Leave Policy Assignment")
  File "/home/frappe/frappe-bench/apps/frappe/frappe/__init__.py", line 723, in new_doc
    return get_new_doc(doctype, parent_doc, parentfield, as_dict=as_dict)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/create_new.py", line 21, in get_new_doc
    frappe.local.new_doc_templates[doctype] = make_new_doc(doctype)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/create_new.py", line 39, in make_new_doc
    "docstatus": 0
  File "/home/frappe/frappe-bench/apps/frappe/frappe/__init__.py", line 789, in get_doc
    doc = frappe.model.document.get_doc(*args, **kwargs)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/document.py", line 73, in get_doc
    controller = get_controller(doctype)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/base_document.py", line 74, in get_controller
    return frappe.cache().hget(key, doctype, generator=_get_controller, shared=True)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/utils/redis_wrapper.py", line 191, in hget
    value = generator()
  File "/home/frappe/frappe-bench/apps/frappe/frappe/model/base_document.py", line 57, in _get_controller
    module = load_doctype_module(doctype, module_name)
  File "/home/frappe/frappe-bench/apps/frappe/frappe/modules/utils.py", line 207, in load_doctype_module
    raise ImportError('Module import failed for {0} ({1})'.format(doctype, module_name + ' Error: ' + str(e)))
ImportError: Module import failed for Leave Policy Assignment (frappe.core.doctype.leave_policy_assignment.leave_policy_assignment Error: No module named 'frappe.core.doctype.leave_policy_assignment')

[ruchamahabal]

This patch was completely removed in frappe/erpnext#31097.