autostart scripts: remove SYS_PARAM_VER

With the airframe defaults there's no use for that anymore

src/lib/systemlib/system_params.c

@@ -57,8 +57,7 @@ PARAM_DEFINE_INT32(SYS_AUTOSTART, 0);
  * RC* parameters are preserved.
  *
  * @value 0 Keep parameters
- * @value 1 Reset parameters
- * @value 2 Reload airframe parameters
+ * @value 1 Reset parameters to airframe defaults
  * @group System
  */
 PARAM_DEFINE_INT32(SYS_AUTOCONFIG, 0);
@@ -114,19 +113,6 @@ PARAM_DEFINE_INT32(SYS_RESTART_TYPE, 2);
  */
 PARAM_DEFINE_INT32(SYS_MC_EST_GROUP, 2);
 
-/**
- * Parameter version
- *
- * This is used internally only: an airframe configuration might set an expected
- * parameter version value via PARAM_DEFAULTS_VER. This is checked on bootup
- * against SYS_PARAM_VER, and if they do not match, parameters from the airframe
- * configuration are reloaded.
- *
- * @min 0
- * @group System
- */
-PARAM_DEFINE_INT32(SYS_PARAM_VER, 1);
-
 /**
  * Enable auto start of rate gyro thermal calibration at the next power up.
  *

src/modules/local_position_estimator/BlockLocalPositionEstimator.hpp

@@ -401,8 +401,6 @@ private:
 
 
 	DEFINE_PARAMETERS(
-		(ParamInt<px4::params::SYS_AUTOSTART>) _param_sys_autostart,   /**< example parameter */
-
 		// general parameters
 		(ParamInt<px4::params::LPE_FUSION>) _param_lpe_fusion,
 		(ParamFloat<px4::params::LPE_VXY_PUB>) _param_lpe_vxy_pub,

src/modules/mavlink/mavlink_parameters.cpp

@@ -309,7 +309,6 @@ MavlinkParametersManager::send()
 		param_find("SENS_BOARD_Y_OFF");
 		param_find("SENS_BOARD_Z_OFF");
 		param_find("SENS_DPRES_OFF");
-		param_find("SYS_PARAM_VER");
 		param_find("TRIG_MODE");
 		param_find("UAVCAN_ENABLE");