removed migrationcache

src/NzbDrone.Core/Datastore/Migration/Framework/MigrationController.cs

@@ -1,5 +1,4 @@
-using System.Collections.Generic;
-using System.Reflection;
+using System.Reflection;
 using FluentMigrator.Runner;
 using FluentMigrator.Runner.Initialization;
 using FluentMigrator.Runner.Processors.Sqlite;
@@ -17,8 +16,6 @@ namespace NzbDrone.Core.Datastore.Migration.Framework
         private readonly ISQLiteAlter _sqLiteAlter;
         private readonly ISqLiteMigrationHelper _migrationHelper;
 
-        private static readonly HashSet<string> MigrationCache = new HashSet<string>();
-
         public MigrationController(IAnnouncer announcer, ISQLiteAlter sqLiteAlter, ISqLiteMigrationHelper migrationHelper)
         {
             _announcer = announcer;
@@ -28,10 +25,6 @@ namespace NzbDrone.Core.Datastore.Migration.Framework
 
         public void MigrateToLatest(string connectionString, MigrationType migrationType)
         {
-            lock (MigrationCache)
-            {
-                if (MigrationCache.Contains(connectionString.ToLower())) return;
-
             _announcer.Heading("Migrating " + connectionString);
 
             var assembly = Assembly.GetExecutingAssembly();
@@ -52,9 +45,6 @@ namespace NzbDrone.Core.Datastore.Migration.Framework
             var processor = factory.Create(connectionString, _announcer, options);
             var runner = new MigrationRunner(assembly, migrationContext, processor);
             runner.MigrateUp(true);
-
-                MigrationCache.Add(connectionString.ToLower());
-            }
         }
     }
 }