Remove unneeded check of variable to allow mysqld_safe support --numa-interleave

MySQL Percona Server :

5.7.26-29-log Percona Server (GPL), Release 29, Revision 11ad961

use mysqld_safe --help

When I add --numa-interleave into mysql  shell script:

        $exec   --numa-interleave \   # add there
                --datadir="$datadir" --socket="$socketfile" \
                --pid-file="$mypidfile" \
                --basedir=/usr --user=mysql $extra_opts >/dev/null 2>&1 &
        safe_pid=$!

start mysql

/etc/init.d/mysql start

start fail, error log:

2019-10-10T09:52:38.051540+08:00 0 [ERROR] unknown option '--numa-interleave'
2019-10-10T09:52:38.051549+08:00 0 [ERROR] Aborting

mysqld_safe does not support --numa-interleave option?