MDEV-7692 MariaDB - mysql-test - SUITE:percona - percona.innodb_sys_index...

MDEV-7692 MariaDB - mysql-test - SUITE:percona - percona.innodb_sys_index 'xtradb' fails - @@version_comment

The test checked version_comment which is not helpful, and it would
cause the mismatch on any build apart from default source builds.
Fixed by removing the check

mysql-test/suite/percona/innodb_sys_index.result

 drop table if exists t1;
 Warnings:
 Note	1051	Unknown table 't1'
-select @@version_comment limit 1 ;
-@@version_comment
-Source distribution
 SELECT COUNT(*) FROM `information_schema`.`INNODB_SYS_INDEXES` ;
 CREATE TABLE test.t1 (  `a` SERIAL NOT NULL ,  `b` VARCHAR( 255 ) NOT NULL ,  INDEX ( `b` )  ) ENGINE = InnoDB ;
 SHOW TABLE STATUS FROM `information_schema` LIKE 'INNODB\_SYS\_INDEXES%' ;

mysql-test/suite/percona/innodb_sys_index.test

@@ -5,7 +5,6 @@ drop table if exists t1;
 #
 # test for bug LP#875797 "Using 'innodb_sys_indexes' causes core dump"
 #
-select @@version_comment limit 1 ;
 --disable_result_log
 SELECT COUNT(*) FROM `information_schema`.`INNODB_SYS_INDEXES` ;
 CREATE TABLE test.t1 (  `a` SERIAL NOT NULL ,  `b` VARCHAR( 255 ) NOT NULL ,  INDEX ( `b` )  ) ENGINE = InnoDB ;