Revert "Prevent NPE"

This reverts commit f3cba25195.

app/src/main/java/com/sun/mail/imap/IMAPFolder.java

@@ -3638,7 +3638,6 @@ public class IMAPFolder extends Folder implements UIDFolder, ResponseHandler {
 		ir.readAtomStringList(); // Skip EARLIER
 		String uids = ir.readAtom();
 		UIDSet[] uidset = UIDSet.parseUIDSets(uids);
-		if (uidset != null) {
 		List<Message> msgs = new ArrayList<>();
 		for (long uid : UIDSet.toArray(uidset)) {
 			Message m = uidTable.get(uid);
@@ -3651,7 +3650,6 @@ public class IMAPFolder extends Folder implements UIDFolder, ResponseHandler {
 		if (!msgs.isEmpty() &&
 				doExpungeNotification && hasMessageCountListener)
 			notifyMessageRemovedListeners(true, msgs.toArray(new Message[0]));
-		}
 /*
 	    String[] s = ir.readAtomStringList();
 	    if (s == null) {	// no (EARLIER)