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
Merge remote-tracking branch 'omni/android-4.4' into android-4.4