Adjust innodb.innodb-wl5522-debug result

The test result was affected by
commit 007f68c3
but the adjustment was inadvertently omitted.

mysql-test/suite/innodb/r/innodb-wl5522-debug.result

@@ -867,8 +867,6 @@ SELECT COUNT(*) FROM test_wl5522.t1;
 ERROR HY000: Tablespace has been discarded for table `t1`
 SET SESSION debug_dbug="+d,ib_import_create_index_failure_1";
 ALTER TABLE test_wl5522.t1 ADD INDEX idx(c1);
-Warnings:
-Warning	1814	Tablespace has been discarded for table `t1`
 SET SESSION debug_dbug=@saved_debug_dbug;
 DROP TABLE test_wl5522.t1;
 unlink: t1.ibd