Ignore migrations that were previously reverted

*   1 6f26472d
*   1 b7e3a1e0
*   1 b04ce84f
*   1 4c4f72f6
*   1 5ca1325f
*   1 10aa097a
*   1 18492d86"
*   1 333c4f61
*   1 0a97ae31
*   1 fc8ea472
*   2 75245d6b
*   1 aca93b8f
*   2 8d4d9705
*   4 bff25ae0
*   1 8d4d9705
*   3 2cdd4d84
*   1 43e8d050
*   1 d85303e8

.gitignore

@@ -575,3 +575,32 @@ db/schema_migrations/20180831164904
 db/schema_migrations/20180202111106
 # Removed in b87dcc238a8
 db/schema_migrations/20181218192239
+
+# Removed in various revert commits
+db/schema_migrations/20180115094742
+db/schema_migrations/20180115113902
+db/schema_migrations/20190107151029
+db/schema_migrations/20190114184258
+db/schema_migrations/20190228092516
+db/schema_migrations/20190311132500
+db/schema_migrations/20190311132527
+db/schema_migrations/20190703001116
+db/schema_migrations/20190703001120
+db/schema_migrations/20190724091326
+db/schema_migrations/20190801072937
+db/schema_migrations/20191004134055
+db/schema_migrations/20191029060358
+db/schema_migrations/20191029061556
+db/schema_migrations/20191220102807
+db/schema_migrations/20200123092602
+db/schema_migrations/20200123101859
+db/schema_migrations/20200127111953
+db/schema_migrations/20200127131953
+db/schema_migrations/20200127141953
+db/schema_migrations/20200127151953
+db/schema_migrations/20200206111847
+db/schema_migrations/20200214173000
+db/schema_migrations/20200214174519
+db/schema_migrations/20200214174607
+db/schema_migrations/20200309105539
+db/schema_migrations/20200615203153