remove pointless IsDeleted check on SP.RezAttachments()

IsDeleted is never set for an SP, even though it's on EntityBase.
It might be an idea to set it in the future

OpenSim/Region/Framework/Scenes/ScenePresence.cs

@@ -3809,9 +3809,6 @@ namespace OpenSim.Region.Framework.Scenes
             List<AvatarAttachment> attachments = m_appearance.GetAttachments();
             foreach (AvatarAttachment attach in attachments)
             {
-                if (IsDeleted)
-                    return;
-
                 int p = attach.AttachPoint;
                 UUID itemID = attach.ItemID;