ref: remove unused UserRole.permissions_for_user (#72801)

- function contains a type error
- only called in tests
- last reference removed in 8bbc88d

<!-- Describe your PR here. -->

src/sentry/models/userrole.py

@@ -51,17 +51,6 @@ def outboxes_for_update(self, shard_identifier: int | None = None) -> list[Contr
             )
         ]
 
-    @classmethod
-    def permissions_for_user(cls, user_id: int) -> frozenset[str]:
-        """
-        Return a set of permission for the given user ID scoped to roles.
-        """
-        return frozenset(
-            i
-            for sl in cls.objects.filter(users=user_id).values_list("permissions", flat=True)
-            for i in sl
-        )
-
 
 @control_silo_model
 class UserRoleUser(ControlOutboxProducingModel):

tests/sentry/models/test_userrole.py

@@ -10,16 +10,6 @@ class UserRoleTest(TestCase):
     def setUp(self) -> None:
         manage_default_super_admin_role()
 
-    def test_permissions_for_user(self):
-        user = self.create_user(email="[email protected]")
-        user2 = self.create_user(email="[email protected]")
-        role = UserRole.objects.create(name="test", permissions=["test1", "test2"])
-        role.users.add(user)
-        role2 = UserRole.objects.create(name="test2", permissions=["test2", "test3"])
-        role2.users.add(user)
-        assert sorted(UserRole.permissions_for_user(user.id)) == ["test1", "test2", "test3"]
-        assert sorted(UserRole.permissions_for_user(user2.id)) == []
-
     def test_creates_super_admin_role(self):
         role = UserRole.objects.get(name="Super Admin")
         assert sorted(role.permissions) == sorted(settings.SENTRY_USER_PERMISSIONS)