evas: input_pointer: remove unreachable case statement

Directly in the beginning of the function we check if key is
<= EFL_INPUT_VALUE_NONE and return if this is true. No chance key could be
EFL_INPUT_VALUE_NONE below here.

CID: 1361997

src/lib/evas/canvas/efl_input_pointer.c

@@ -491,7 +491,6 @@ _efl_input_pointer_value_set(Eo *obj EINA_UNUSED, Efl_Input_Pointer_Data *pd, Ef
       case EFL_INPUT_VALUE_SLIDER:
         return EINA_FALSE; // TODO
 
-      case EFL_INPUT_VALUE_NONE:
       default:
         return EINA_FALSE;
      }