- removed the option to toggle portals with SetLineSpecial.

This is to keep some people from jumping the gun on this and preventing the implementation of a proper toggling mechanism.
The feature itself will come back, but differently.

- removed portal setup from Build maps

they don't define it anyway so it makes no sense to have it there. Once this code gets refactored this will be in a different place that's identical for all map types.

src/p_acs.cpp

@@ -8299,9 +8299,6 @@ scriptwait:
 					line->args[4] = STACK(1);
 					DPrintf("Set special on line %d (id %d) to %d(%d,%d,%d,%d,%d)\n",
 						linenum, STACK(7), specnum, arg0, STACK(4), STACK(3), STACK(2), STACK(1));
-
-					// [ZZ] re-link with portals (in case this was something related to portal specials)
-					P_CheckPortal(line);
 				}
 				sp -= 7;
 			}

src/p_buildmap.cpp

@@ -630,11 +630,6 @@ static void LoadWalls (walltype *walls, int numwalls, sectortype *bsec)
 		}
 	}
 
-	// [ZZ] set initial line portal link
-	//      (even though this is rather hard to happen... build doesn't have portals in our sense and it's walls don't get translated into anything like this)
-	for (int i = 0; i < numlines; i++)
-		P_CheckPortal(&lines[i]);
-
 	// Finish setting sector properties that depend on walls
 	for (i = 0; i < numsectors; ++i, ++bsec)
 	{