Revert "place disable_ipv6 in the wlan0 folder"

This reverts commit 50eaec1aca4deb7547a0eccc97d09d241882e602.

I don't know what it is supposed to do,
it works without disabling ipv6.
trackball wake

Enables trackball waking on the buzz by changing curcial-oj.idc directly
instead of switching it by the script provided by XDA member WinSuk.

Change-Id: I7fb45577973f5ca57a3fb2d5d68df8bff6af763b
Reference: commit d1efb364cd216a990461117c674985cd0759ae40