Reverts ZAS

This reverts commit fd09ea6ce8. and https://github.com/Baystation12/Baystation12/pull/681

code/ATMOSPHERICS/components/binary_devices/dp_vent_pump.dm

@@ -77,8 +77,6 @@
 
 					var/datum/gas_mixture/removed = air1.remove(transfer_moles)
 
-					if(istype(removed))
-						AirflowRepel(loc,removed.return_pressure())
 					loc.assume_air(removed)
 
 					if(network1)
@@ -97,8 +95,6 @@
 					var/transfer_moles = pressure_delta*air2.volume/(environment.temperature * R_IDEAL_GAS_EQUATION)
 
 					var/datum/gas_mixture/removed = loc.remove_air(transfer_moles)
-					if(istype(removed))
-						AirflowAttract(loc,removed.return_pressure())
 
 					air2.merge(removed)