Remove old takes and payroll table

Time to let go.

gratipay/models/participant/__init__.py

@@ -334,14 +334,6 @@ def clear_payment_instructions(self, cursor):
             self.set_payment_instruction(team, '0.00', update_self=False, cursor=cursor)
 
 
-    def clear_takes(self, cursor):
-        """Leave all teams by zeroing all takes.
-        """
-        for team, nmembers in self.get_old_teams():
-            t = Participant.from_username(team)
-            t.set_take_for(self, Decimal(0), self, cursor)
-
-
     def clear_personal_information(self, cursor):
         """Clear personal information such as statements.
         """
@@ -1095,22 +1087,6 @@ def get_teams(self, only_approved=False, cursor=None):
         return teams
 
 
-    def get_old_teams(self):
-        """Return a list of old-style teams this user was a member of.
-        """
-        return self.db.all("""
-
-            SELECT team AS name
-                 , ( SELECT count(*)
-                       FROM current_takes
-                      WHERE team=x.team
-                    ) AS nmembers
-              FROM current_takes x
-             WHERE member=%s;
-
-        """, (self.username,))
-
-
     def insert_into_communities(self, is_member, name, slug):
         participant_id = self.id
         self.db.run("""
@@ -1519,8 +1495,6 @@ def take_over(self, account, have_confirmation=False):
 
             if this_is_others_last_login_account:
 
-                other.clear_takes(cursor)
-
                 # Take over tips.
                 # ===============
 

sql/branch.sql

@@ -41,3 +41,16 @@ CREATE TRIGGER enforce_email_for_participant_identity
 -- participants.has_verified_identity
 
 ALTER TABLE participants ADD COLUMN has_verified_identity bool NOT NULL DEFAULT false;
+
+
+-- https://github.com/gratipay/gratipay.com/pull/4009
+
+BEGIN;
+    -- Farewell, old takes table!
+    DROP VIEW current_takes;
+    DROP TABLE takes;
+
+    -- Be gone, payroll! I never knew you.
+    DROP VIEW current_payroll;
+    DROP TABLE payroll;
+END;