fix: Removed throw exception on migration down method (#47)

Author: benjie-wd

database/migrations/2019_03_35_000003_drop_unused_logger_columns.php

@@ -15,6 +15,6 @@ public function up(): void
 
     public function down(): void
     {
-        throw new BadMethodCallException('Reversing this migration is not supported.');
+        // Reversing this migration is not supported due to 1 way changes.
     }
 }