Removed extra test case after review comment

mysql-test/r/kill_alarm.result

-show processlist;
-Id	User	Host	db	Command	Time	State	Info
-2	root	localhost	test	Sleep	0		NULL
-3	root	localhost	test	Sleep	0		NULL
-4	root	localhost	test	Query	0	NULL	show processlist
-kill connection 3;
-show processlist;
-Id	User	Host	db	Command	Time	State	Info
-2	root	localhost	test	Sleep	4		NULL
-4	root	localhost	test	Query	0	NULL	show processlist

mysql-test/t/kill_alarm.test

--- source include/not_embedded.inc
-
-connect (con1, localhost, root,,);
-connect (con2, localhost, root,,);
-
-connection con1;
-let $ID=`select connection_id()`;
-
-connection con2;
-show processlist;
-eval kill connection $ID;
---sleep 4
-show processlist;