Revert "Quicksettings: USB Tether tile"

This reverts commit 565e4a5f43f1622226b2cc36ee54377c3cb31e40.
Revert "Quicksettings: USB Tether tile"

This reverts commit 1fd00dacfeb271b7a6847af5d58aaaa2eaa265e1.

Conflicts:
	packages/SystemUI/res/values/pa_strings.xml
	packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickSettings.java
	packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickSettingsModel.java

Change-Id: I2d6ac68773bbaf42d75f506ea4210e1b55230c57
Quicksettings: USB Tether tile

courtesy of OmniRom
based on: http://goo.gl/0RfbFy

PS3: add "private ConnectivityManager mCM;" variable
PS4: compiles, not yet tested
PS5: derp forgot to initialize mCM which caused a NPE
(http://developer.android.com/reference/android/net/ConnectivityManager.html)
PS6: fixed some connectivity manager redundancies in qs.java
PS8: make tile temporary, only appears when connected to usb.

Signed-off-by: Andre Saddler <dresadd09691@gmail.com>
Change-Id: I856f1a1f954544cb9e1b78f504fde8916b94235e

Conflicts:
	packages/SystemUI/res/values/pa_strings.xml
	packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickSettingsModel.java