Remove developer taps and enable dev options by default

Change-Id: I78623fbd2c475e949beb034aeff04acb2c1f48a3
Remove system update options

Change-Id: I27d29e5694e53a4a81a7002482ecae928113c8cb
[2/3] Ad-blocking, hfm

Change-Id: Id1a7efe22e36917a59f981e8dce1b7ace9e9a2e1