[M] Move opt out leaderboard to correct place

src/main/resources/db/migration/mariadb/V1000_18__opt_out_of_leaderboard.sql

@@ -0,0 +1,4 @@
+-- If the column does not exist, add it
+ALTER TABLE `aqua_net_user`
+    ADD COLUMN IF NOT EXISTS `opt_out_of_leaderboard` bit NOT NULL DEFAULT b'0';
+

src/main/resources/db/migration/mariadb/V263__opt_out_of_leaderboard.sql

@@ -1,2 +0,0 @@
-ALTER TABLE `aqua_net_user`
-    ADD COLUMN `opt_out_of_leaderboard` bit NOT NULL DEFAULT b'0';