chore: remove duplicate tests

Fixes the following flake8 issue:

	ihatemoney/tests/budget_test.py:880:5: F811 redefinition of unused 'test_reimbursement_bill' from line 796
	ihatemoney/tests/budget_test.py:930:5: F811 redefinition of unused 'test_transfer_bill' from line 846

PR #1290 introduced these tests twice.

ihatemoney/tests/budget_test.py

@@ -877,90 +877,6 @@ def test_transfer_bill(self):
         balance = self.get_project("random").balance
         assert set(balance.values()), set([500 == -500])
 
-    def test_reimbursement_bill(self):
-        self.post_project("rent")
-
-        # add two participants
-        self.client.post("/rent/members/add", data={"name": "bob"})
-        self.client.post("/rent/members/add", data={"name": "alice"})
-
-        members_ids = [m.id for m in self.get_project("rent").members]
-        # create a bill to test reimbursement
-        self.client.post(
-            "/rent/add",
-            data={
-                "date": "2022-12-12",
-                "what": "december rent",
-                "payer": members_ids[0],  # bob
-                "payed_for": members_ids,  # bob and alice
-                "bill_type": "Expense",
-                "amount": "1000",
-            },
-        )
-        # check balance
-        balance = self.get_project("rent").balance
-        assert set(balance.values()), set([500 == -500])
-        # check paid
-        bob_paid = self.get_project("rent").full_balance[2][members_ids[0]]
-        alice_paid = self.get_project("rent").full_balance[2][members_ids[1]]
-        assert bob_paid == 1000
-        assert alice_paid == 0
-
-        # test reimbursement bill
-        self.client.post(
-            "/rent/add",
-            data={
-                "date": "2022-12-13",
-                "what": "reimbursement for rent",
-                "payer": members_ids[1],  # alice
-                "payed_for": members_ids[0],  # bob
-                "bill_type": "Reimbursement",
-                "amount": "500",
-            },
-        )
-
-        balance = self.get_project("rent").balance
-        assert set(balance.values()), set([0 == 0])
-        # check paid
-        bob_paid = self.get_project("rent").full_balance[2][members_ids[0]]
-        alice_paid = self.get_project("rent").full_balance[2][members_ids[1]]
-        assert bob_paid == 500
-        assert alice_paid == 500
-
-    def test_transfer_bill(self):
-        self.post_project("random")
-
-        # add two participants
-        self.client.post("/random/members/add", data={"name": "zorglub"})
-        self.client.post("/random/members/add", data={"name": "fred"})
-
-        members_ids = [m.id for m in self.get_project("random").members]
-        self.client.post(
-            "/random/add",
-            data={
-                "date": "2022-10-10",
-                "what": "Rent",
-                "payer": members_ids[0],  # zorglub
-                "payed_for": members_ids,  # zorglub + fred
-                "bill_type": "Expense",
-                "amount": "1000",
-            },
-        )
-        # test transfer bill (should not affect anything whatsoever)
-        self.client.post(
-            "/random/add",
-            data={
-                "date": "2022-10-10",
-                "what": "Transfer of 500 to fred",
-                "payer": members_ids[0],  # zorglub
-                "payed_for": members_ids[1],  # fred
-                "bill_type": "Transfer",
-                "amount": "500",
-            },
-        )
-        balance = self.get_project("random").balance
-        assert set(balance.values()), set([500 == -500])
-
     def test_weighted_balance(self):
         self.post_project("raclette")