vendor/omni: remove not working PRODUCT_PROPERTY_OVERRIDES lines

First one always wins so its useless trying to overwrite them here

Change-Id: I72f8c78f3b066384cc07670e6bbca984d31362b7
Merge "vendor/omni: remove not working PRODUCT_PROPERTY_OVERRIDES lines" into android-4.4
apns-conf.xml: Add Public Mobile SP APN

See: http://goo.gl/vziz80

Change-Id: I5a0db08d8df5606ae9b3cc437656d88eec69246f
apns-conf: Fix Digi MMS port.

Change-Id: Id6c9c4916b0378f6f2c99d023f7dd8237d26b47a
Merge branch 'android-4.4' of https://github.com/omnirom/android_vendor_omni into android-4.4