BoardConfig: Remove VoIP flag

It breaks builtin VoIP app.
pyramid: Add custom audio policy configuration

Removed AUDIO_OUTPUT_FLAG_VOIP_RX
Revert "pyramid: Start using HTCQualcommRIL class"

Seems like it breaks mobile internet
This reverts commit 857e15237784c33c677debb27b9b5aca7c4904bb.