[gps] remove duplicated elements (configured by common gps module)

conf/modules/gps_sim_hitl.xml

@@ -6,7 +6,6 @@
       Sim HITL GPS
       Simulate GPS for HITL (HardwareInTheLoop) from rotorcrafts horizontal/vertical reference system.
     </description>
-    <configure name="GPS_LED" value="2" description="LED number to indicate fix or none"/>
   </doc>
   <autoload name="gps"/>
   <autoload name="gps_nps"/>
@@ -16,14 +15,10 @@
   <init fun="gps_sim_hitl_init()"/>
   <event fun="gps_sim_hitl_event()"/>
   <makefile target="ap" firmware="rotorcraft">
-    <configure name="GPS_LED" default="none"/>
 
-    <file name="gps.c" dir="subsystems"/>
     <file name="gps_sim_hitl.c" dir="subsystems/gps"/>
 
     <define name="HITL"/>
-    <define name="USE_GPS"/>
-    <define name="GPS_LED" value="$(GPS_LED)" cond="ifneq ($(GPS_LED),none)"/>
     <define name="GPS_TYPE_H" value="subsystems/gps/gps_sim_hitl.h" type="string"/>
   </makefile>
 </module>