remove rank column from managershalf

sql/2nf/managershalf.sql

@@ -1,3 +1,4 @@
 begin;
 alter table managershalf drop column "lgID";
+alter table managershalf drop column "rank";
 commit;

sql/corrections/teamshalf.sql

@@ -0,0 +1,7 @@
+begin;
+insert into teamshalf
+select yearid, null, teamid, half, null, null, "rank", sum(g), sum(w), sum(l)
+from managershalf
+where yearid = 1892
+group by yearid, teamid, half;
+commit;