Remove driver seats from vehicle.h

It makes no sense to make distinction between RHD and LHD.

Test:manual
Change-Id: Idf3a9f49f27365ae4582dc1ab6b8d64b0ca5977a
diff --git a/include/hardware/vehicle.h b/include/hardware/vehicle.h
index 9078d54..35ad493 100644
--- a/include/hardware/vehicle.h
+++ b/include/hardware/vehicle.h
@@ -2090,17 +2090,15 @@
  * Various Seats in the car.
  */
 enum vehicle_seat {
-    VEHICLE_SEAT_DRIVER_LHD             = 0x0001,
-    VEHICLE_SEAT_DRIVER_RHD             = 0x0002,
-    VEHICLE_SEAT_ROW_1_PASSENGER_LEFT   = 0x0010,
-    VEHICLE_SEAT_ROW_1_PASSENGER_CENTER = 0x0020,
-    VEHICLE_SEAT_ROW_1_PASSENGER_RIGHT  = 0x0040,
-    VEHICLE_SEAT_ROW_2_PASSENGER_LEFT   = 0x0100,
-    VEHICLE_SEAT_ROW_2_PASSENGER_CENTER = 0x0200,
-    VEHICLE_SEAT_ROW_2_PASSENGER_RIGHT  = 0x0400,
-    VEHICLE_SEAT_ROW_3_PASSENGER_LEFT   = 0x1000,
-    VEHICLE_SEAT_ROW_3_PASSENGER_CENTER = 0x2000,
-    VEHICLE_SEAT_ROW_3_PASSENGER_RIGHT  = 0x4000
+    VEHICLE_SEAT_ROW_1_LEFT   = 0x0001,
+    VEHICLE_SEAT_ROW_1_CENTER = 0x0002,
+    VEHICLE_SEAT_ROW_1_RIGHT  = 0x0004,
+    VEHICLE_SEAT_ROW_2_LEFT   = 0x0010,
+    VEHICLE_SEAT_ROW_2_CENTER = 0x0020,
+    VEHICLE_SEAT_ROW_2_RIGHT  = 0x0040,
+    VEHICLE_SEAT_ROW_3_LEFT   = 0x0100,
+    VEHICLE_SEAT_ROW_3_CENTER = 0x0200,
+    VEHICLE_SEAT_ROW_3_RIGHT  = 0x0400
 };
 
 /**