Remove obsolete RIL class

Signed-off-by: Brandon McAnsh <brandon.mcansh@gmail.com>
jflteusc: Add mising overlays

Signed-off-by: Brandon McAnsh <brandon.mcansh@gmail.com>
Update full_jflteusc.mk

the model of the us cellular is listed as the SCH-R970
not the SGH-970...