Kill old volume cursor to make way for one that works on all keyboards

Squashed commit of the following:

commit 0af5d8acaa4265eaacc99f1a3592b6be9a049b6b
Author: nuclearmistake <nuclearmistake@gmail.com>
Date:   Mon Oct 14 17:13:35 2013 -0400

    Revert "LatinIME: volume cursor keys"

    This reverts commit 758e527b61c71af9cde8f7f979f03a6de04b5af8.

    Conflicts:

    	java/res/values/strings.xml
    	java/res/xml/prefs.xml
    	java/src/com/android/inputmethod/latin/Settings.java
    	java/src/com/android/inputmethod/latin/SettingsValues.java

    Change-Id: If2c7329f9e57ac90251d96039ec312d0da48d4ee

commit 75404f4fb99bceb358586228b33d59a490f489f5
Author: nuclearmistake <nuclearmistake@gmail.com>
Date:   Mon Oct 14 17:11:04 2013 -0400

    Revert "LatinIME: Fix volume cursor"

    This reverts commit ce0ce22f9c427fbfa31309525c8982fae2785f6e.

Change-Id: I77deea0a1fd518c646a14095228148c410e0a04f