Update Chemistry-Generator.dm

Removes focusing from the combination to prevent focusing from canceling out nerve-stimulating thus preventing encephalophrasive from forming

code/modules/reagents/Chemistry-Generator.dm

@@ -345,7 +345,7 @@
 											PROPERTY_CIPHERING_PREDATOR = list(PROPERTY_CIPHERING, PROPERTY_CROSSMETABOLIZING),\
 											PROPERTY_FIRE_PENETRATING = list(PROPERTY_OXYGENATING, PROPERTY_VISCOUS),\
 											PROPERTY_BONEMENDING = list(PROPERTY_HYPERDENSIFICATING, PROPERTY_NUTRITIOUS),\
-											PROPERTY_ENCEPHALOPHRASIVE = list(PROPERTY_NERVESTIMULATING, PROPERTY_PSYCHOSTIMULATING, PROPERTY_FOCUSING))
+											PROPERTY_ENCEPHALOPHRASIVE = list(PROPERTY_NERVESTIMULATING, PROPERTY_PSYCHOSTIMULATING))
 	var/datum/chem_property/match
 	var/datum/chem_property/initial_property
 	for(var/datum/chem_property/P in properties)