presto: wifi: remove custom wifi changes

We have a fork of the main repository and don't need this change.

Change-Id: I19adffca046dff47aabfeafd68826d8a25d049a9
presto: add standalone app Advanced Settings

only earpiece volume gain feature implemented at the moment

Change-Id: I2bcd74e4fa0b7be7d10d3ab544cf9fa14b617443
AdvancedSettings: build fix; new icon;

Change-Id: I5567197b956ebab5246a6a0bde20492f5337eeec