Remove unused and unnecessary drawables

java/res/drawable-hdpi/sym_keyboard_feedback_123_mic.png

java/res/drawable-hdpi/sym_keyboard_feedback_delete.png

java/res/drawable-hdpi/sym_keyboard_feedback_numalt.png

java/res/drawable-hdpi/sym_keyboard_feedback_return.png

java/res/drawable-hdpi/sym_keyboard_feedback_search.png

java/res/drawable-hdpi/sym_keyboard_feedback_shift.png

java/res/drawable-land-hdpi/btn_keyboard_key_normal.9.png

.../res/drawable-land-hdpi/btn_keyboard_key_normal_off.9.png

...rawable-land-hdpi/btn_keyboard_key_normal_off_stone.9.png

java/res/drawable-land-hdpi/btn_keyboard_key_normal_on.9.png

...drawable-land-hdpi/btn_keyboard_key_normal_on_stone.9.png

...es/drawable-land-hdpi/btn_keyboard_key_normal_stone.9.png

java/res/drawable-land-hdpi/btn_keyboard_key_pressed.9.png

...res/drawable-land-hdpi/btn_keyboard_key_pressed_off.9.png

.../res/drawable-land-hdpi/btn_keyboard_key_pressed_on.9.png

java/res/drawable-land/btn_keyboard_key.xml

java/res/drawable-mdpi/sym_keyboard_feedback_123_mic.png

java/res/drawable-mdpi/sym_keyboard_feedback_delete.png

java/res/drawable-mdpi/sym_keyboard_feedback_numalt.png

java/res/drawable-mdpi/sym_keyboard_feedback_return.png