Revert "Yandex search workaround"

This reverts commit be6f48a5de.

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

@@ -2378,13 +2378,6 @@ public class IMAPFolder extends Folder implements UIDFolder, ResponseHandler {
 
 	} catch (CommandFailedException cfx) {
 	    // unsupported charset or search criterion
-		eu.faircode.email.Log.e(cfx);
-		Response r = cfx.getResponse();
-		if (r != null && r.isNO()) {
-			String rest = r.getRest();
-			if (rest != null && rest.contains("[UNAVAILABLE]")) // Yandex
-				throw new MessagingException(cfx.getMessage(), cfx);
-		}
 	    return super.search(term);
 	} catch (SearchException sex) {
 	    // too complex for IMAP