Plane: remove old AIR_START code

this was never used or tested

ArduPlane/ArduPlane.pde

@@ -1022,16 +1022,7 @@ static void update_GPS(void)
                 ground_start_count = 5;
 
             } else {
-                if(ENABLE_AIR_START == 1 && (ground_start_avg / 5) < SPEEDFILT) {
-                    startup_ground();
-
-                    if (g.log_bitmask & MASK_LOG_CMD)
-                        Log_Write_Startup(TYPE_GROUNDSTART_MSG);
-
-                    init_home();
-                } else if (ENABLE_AIR_START == 0) {
-                    init_home();
-                }
+                init_home();
 
                 if (g.compass_enabled) {
                     // Set compass declination automatically

ArduPlane/commands.pde

@@ -32,13 +32,6 @@ static void update_auto()
     }
 }
 
-// this is only used by an air-start
-static void reload_commands_airstart()
-{
-    init_commands();
-    decrement_cmd_index();
-}
-
 /*
   fetch a mission item from EEPROM
 */
@@ -127,13 +120,6 @@ static void set_cmd_with_index(struct Location temp, int16_t i)
     hal.storage->write_dword(mem, temp.lng);
 }
 
-static void decrement_cmd_index()
-{
-    if (g.command_index > 0) {
-        g.command_index.set_and_save(g.command_index - 1);
-    }
-}
-
 static int32_t read_alt_to_hold()
 {
     if (g.RTL_altitude_cm < 0) {

ArduPlane/config.h

@@ -351,13 +351,6 @@
  # define GROUND_START_DELAY             0
 #endif
 
-//////////////////////////////////////////////////////////////////////////////
-// ENABLE_AIR_START
-//
-#ifndef ENABLE_AIR_START
- # define ENABLE_AIR_START               DISABLED
-#endif
-
 //////////////////////////////////////////////////////////////////////////////
 // ENABLE ELEVON_MIXING
 //

ArduPlane/system.pde

@@ -216,43 +216,9 @@ static void init_ardupilot()
     hal.uartC->println_P(msg);
 #endif
 
-    if (ENABLE_AIR_START == 1) {
-        // Perform an air start and get back to flying
-        gcs_send_text_P(SEVERITY_LOW,PSTR("<init_ardupilot> AIR START"));
-
-        // Get necessary data from EEPROM
-        //----------------
-        //read_EEPROM_airstart_critical();
-        ahrs.init();
-        ahrs.set_fly_forward(true);
-        ahrs.set_wind_estimation(true);
-
-        ins.init(AP_InertialSensor::WARM_START, 
-                 ins_sample_rate,
-                 flash_leds);
-
-        // This delay is important for the APM_RC library to work.
-        // We need some time for the comm between the 328 and 1280 to be established.
-        int old_pulse = 0;
-        while (millis()<=1000 
-            && (abs(old_pulse - hal.rcin->read(g.flight_mode_channel)) > 5
-               || hal.rcin->read(g.flight_mode_channel) == 1000
-               || hal.rcin->read(g.flight_mode_channel) == 1200))
-        {
-            old_pulse = hal.rcin->read(g.flight_mode_channel);
-            delay(25);
-        }
-        g_gps->update();
-
-        if (g.log_bitmask & MASK_LOG_CMD)
-            Log_Write_Startup(TYPE_AIRSTART_MSG);
-        reload_commands_airstart();                     // Get set to resume AUTO from where we left off
-
-    }else {
-        startup_ground();
-        if (g.log_bitmask & MASK_LOG_CMD)
-            Log_Write_Startup(TYPE_GROUNDSTART_MSG);
-    }
+    startup_ground();
+    if (g.log_bitmask & MASK_LOG_CMD)
+        Log_Write_Startup(TYPE_GROUNDSTART_MSG);
 
     // choose the nav controller
     set_nav_controller();