Fixed checking for assassination targets. It checked for them on 8 or higher, the away mission Z is 7.

A number of computers no longer work on Z7 (away mission).

-AI upload
-Security cameras
-Crew monitoring computer
-Comms console
-Robotics console
-Security records

git-svn-id: http://tgstation13.googlecode.com/svn/trunk@4699 316c924e-a436-60f5-8080-3fe189b3f50e

code/game/machinery/computer/robot.dm

@@ -28,6 +28,9 @@
 /obj/machinery/computer/robotics/attack_hand(var/mob/user as mob)
 	if(..())
 		return
+	if (src.z > 6)
+		user << "\red <b>Unable to establish a connection</b>: \black You're too far away from the station!"
+		return
 	user.machine = src
 	var/dat
 	if (src.temp)