simplification of cleanup unused tags

src/NzbDrone.Core/Housekeeping/Housekeepers/CleanupUnusedTags.cs

@@ -18,8 +18,8 @@ namespace NzbDrone.Core.Housekeeping.Housekeepers
 
         public void Clean()
         {
-            using (var mapper = _database.OpenConnection())
+            var mapper = _database.OpenConnection();
-            {
+
             var usedTags = new[] { "Movies", "Notifications", "DelayProfiles", "Restrictions", "ImportLists", "Indexers" }
                 .SelectMany(v => GetUsedTags(v, mapper))
                 .Distinct()
@@ -29,7 +29,6 @@ namespace NzbDrone.Core.Housekeeping.Housekeepers
 
             mapper.Execute($"DELETE FROM Tags WHERE NOT Id IN ({usedTagsList})");
         }
-        }
 
         private int[] GetUsedTags(string table, IDbConnection mapper)
         {