tests: hostapd MAC ACL file entry removal

Signed-off-by: Jouni Malinen <j@w1.fi>

tests/hwsim/hostapd.macaddr

@@ -1 +1,5 @@
 02:00:00:00:00:00
+02:00:00:00:00:12
+02:00:00:00:00:34
+-02:00:00:00:00:12
+-02:00:00:00:00:34