Revert "Register for WhisperPush during setup wizard"

This reverts commit e9c953b8b6344c3a50af21471165111fd7b0eb06.
Remove CM Account from Accounts

Change-Id: Ifcafab1bafc070f61ed6978f05348a0583b92977
This is Nexus 5 Experience ROM, not CyanogenMod. ;)

Change-Id: Ieddcfd05e855d22162c3305d20debed576042ae7