test/zdtm: clear unused variable "FILE_LOCK_TEST_LIST"

Signed-off-by: Yicheng Qin <yichengq@google.com>
Acked-by: Andrew Vagin <avagin@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

test/zdtm.sh

@@ -647,8 +647,6 @@ else
 		run_test $1 -n mnt || case_error $1
 	elif echo $IPC_TEST_LIST | fgrep -qw $1; then
 		run_test $1 -n ipc || case_error $1
-	elif echo $FILE_LOCK_TEST_LIST | fgrep -qw $1; then
-		run_test $1 -l || case_error $1
 	else
 		run_test $1 || case_error $1
 	fi