Fixed: Removed unused references to System.Drawing

src/NzbDrone.Common/Disk/DiskProviderBase.cs

@@ -9,7 +9,6 @@ using NzbDrone.Common.EnsureThat;
 using NzbDrone.Common.EnvironmentInfo;
 using NzbDrone.Common.Extensions;
 using NzbDrone.Common.Instrumentation;
-using System.Drawing;
 
 namespace NzbDrone.Common.Disk
 {

src/NzbDrone.Core/MediaCover/CoverAlreadyExistsSpecification.cs

@@ -1,7 +1,5 @@
-using System;
+using NzbDrone.Common.Disk;
-using NzbDrone.Common.Disk;
 using NzbDrone.Common.Http;
-using System.Drawing;
 using NLog;
 
 namespace NzbDrone.Core.MediaCover
@@ -36,4 +34,4 @@ namespace NzbDrone.Core.MediaCover
             return fileSize == headers.ContentLength;
         }
     }
-}
+}