Fixes issue 3315 with VirtualPlayers

http://youtrack.sk89q.com/issue/WORLDEDIT-3315

worldedit-core/src/main/java/com/sk89q/worldedit/session/SessionManager.java

@@ -155,10 +155,8 @@ public class SessionManager {
             session.setBlockChangeLimit(config.defaultChangeLimit);
 
             // Remember the session if the session is still active
-            if (sessionKey.isActive()) {
             sessions.put(getKey(owner), new SessionHolder(sessionKey, session));
         }
-        }
 
         // Set the limit on the number of blocks that an operation can
         // change at once, or don't if the owner has an override or there