fix some unused/uninitialized* vars found by qfcc's new scoping.

* parameters were getting shaddowed by locals of the same name. this used to
  be harmless as the local def would just pick up the param rather than
  creating a new def, but now that params and locals are in separate scopes,
  this shaddowing becomes a potential problem.

admin.qc

@@ -307,7 +307,6 @@ void() Admin_Cmd =
         else if (st == "team1" || st == "team2" || st == "team3" || st == "team4")
         {
             local float targetteam, tc, tc2;
-            local string st2;
 
             if (st == "team1")
                 targetteam = 1;

ai.qc

@@ -579,7 +579,6 @@ entity (entity scanner) LookAround =
     if (infokey(world,"ceasefire")=="on") //OfN
 	    return scanner;
 
-    local entity		scanner;
 	local entity		client;
 	local float			gotatarget;
 

grunty.qc

@@ -590,7 +590,6 @@ entity (entity scanner) LookAroundGrunty =
 	if (infokey(world,"ceasefire")=="on") //OfN
 	    return scanner;
     
-    local entity		scanner;
 	local entity		client;
 	local float			gotatarget;
 

warlock.qc

@@ -521,8 +521,6 @@ void(entity demon) custom_demon_name =
 
 void (float points) custom_demon_create = 
 {
-	local float points;
-
 	//Play random summoning sound here
 	//r = random();
 	//if (r < 0.33)