removed the qt gui from sflphone

src/gui/official/images/hold_off.png

src/gui/official/images/hold_on.png

src/gui/official/images/l.png

src/gui/official/images/l1_off.png

src/gui/official/images/l1_on.png

src/gui/official/images/l2_off.png

src/gui/official/images/l2_on.png

src/gui/official/images/l3_off.png

src/gui/official/images/l3_on.png

src/gui/official/images/l4_off.png

src/gui/official/images/l4_on.png

src/gui/official/images/l5_off.png

src/gui/official/images/l5_on.png

src/gui/official/images/l6_off.png

src/gui/official/images/l6_on.png

src/gui/official/images/logo_ico.png

src/gui/official/images/main.png

src/gui/official/images/minimize_off.png

src/gui/official/images/minimize_on.png

src/gui/official/images/mute_off.png