system_prop: Update product properties

* Move screen density prop to j5-common
* Remove EONS prop (not in stock build prop)
diff --git a/system_prop.mk b/system_prop.mk
index d0255d4..f219b24 100644
--- a/system_prop.mk
+++ b/system_prop.mk
@@ -12,11 +12,3 @@
 	ro.multisim.simslotcount=2 \
 	persist.radio.multisim.config=dsds \
 	rild.libpath2=/system/lib/libsec-ril-dsds.so
-
-# EONS
-PRODUCT_DEFAULT_PROPERTY_OVERRIDES += \
-	persist.eons.enabled=true
-
-# Screen
-PRODUCT_PROPERTY_OVERRIDES += \
-	ro.sf.lcd_density=320