Removing "Histories" on migration.

NzbDrone.Core/Datastore/Migrations/Migration20110619.cs

@@ -0,0 +1,24 @@
+using System;
+using System.Data;
+using Migrator.Framework;
+
+namespace NzbDrone.Core.Datastore.Migrations
+{
+
+    [Migration(20110619)]
+    public class Migration20110619 : Migration
+    {
+        public override void Up()
+        {
+            if (Database.TableExists("Histories"))
+            {
+                Database.RemoveTable("Histories");
+            }
+        }
+        
+        public override void Down()
+        {
+            throw new NotImplementedException();
+        }
+    }
+}