Fix test failure on innodb-trim.

Skip test if system can't do trim operation.

mysql-test/suite/innodb/t/innodb-trim.test

@@ -31,18 +31,18 @@ call innodb_insert_proc(16000);
 commit;
 set autocommit=1;
 
---disable_warnings
+
+let $success= `SELECT variable_value FROM information_schema.global_status WHERE variable_name = 'innodb_num_page_compressed_trim_op'`;
+
+if (!$success) {
 --disable_query_log
 --disable_result_log
-let $success= SELECT variable_value FROM information_schema.global_status WHERE variable_name = 'innodb_num_page_compressed_trim_op';
-
-if ($success) {
-let $wait_condition= SELECT variable_value > 5 FROM information_schema.global_status WHERE variable_name = 'innodb_num_page_compressed_trim_op';
---source include/wait_condition.inc
-}
---enable_warnings
+    DROP PROCEDURE innodb_insert_proc;
+    DROP TABLE innodb_page_compressed;
 --enable_query_log
 --enable_result_log
+    --skip "Test requires TRIM";
+}
 
 DROP PROCEDURE innodb_insert_proc;
 DROP TABLE innodb_page_compressed;