Revert "tabUI drawables"

This reverts commit 2445523e53481ec287363899438ee67843df35d1.

Conflicts:

	packages/SystemUI/res/drawable-sw1000dp-xhdpi/stat_sys_signal_0.png
	packages/SystemUI/res/drawable-sw1000dp-xhdpi/stat_sys_signal_0_fully.png
	packages/SystemUI/res/drawable-sw1000dp-xhdpi/stat_sys_signal_1.png
	packages/SystemUI/res/drawable-sw1000dp-xhdpi/stat_sys_signal_1_fully.png
	packages/SystemUI/res/drawable-sw1000dp-xhdpi/stat_sys_signal_2.png
	packages/SystemUI/res/drawable-sw1000dp-xhdpi/stat_sys_signal_2_fully.png
	packages/SystemUI/res/drawable-sw1000dp-xhdpi/stat_sys_signal_3.png
	packages/SystemUI/res/drawable-sw1000dp-xhdpi/stat_sys_signal_3_fully.png
	packages/SystemUI/res/drawable-sw1000dp-xhdpi/stat_sys_signal_4.png
	packages/SystemUI/res/drawable-sw1000dp-xhdpi/stat_sys_signal_4_fully.png
	packages/SystemUI/res/drawable-sw1000dp-xhdpi/stat_sys_signal_null.png
	packages/SystemUI/res/drawable-sw1000dp-xhdpi/stat_sys_wifi_signal_0.png
	packages/SystemUI/res/drawable-sw1000dp-xhdpi/stat_sys_wifi_signal_1.png
	packages/SystemUI/res/drawable-sw1000dp-xhdpi/stat_sys_wifi_signal_1_fully.png
	packages/SystemUI/res/drawable-sw1000dp-xhdpi/stat_sys_wifi_signal_2.png
	packages/SystemUI/res/drawable-sw1000dp-xhdpi/stat_sys_wifi_signal_2_fully.png
	packages/SystemUI/res/drawable-sw1000dp-xhdpi/stat_sys_wifi_signal_3.png
	packages/SystemUI/res/drawable-sw1000dp-xhdpi/stat_sys_wifi_signal_3_fully.png
	packages/SystemUI/res/drawable-sw1000dp-xhdpi/stat_sys_wifi_signal_4.png
	packages/SystemUI/res/drawable-sw1000dp-xhdpi/stat_sys_wifi_signal_4_fully.png
	packages/SystemUI/res/drawable-sw1000dp-xhdpi/stat_sys_wifi_signal_null.png