delete module's redundant print_status()

- we can already get the running status from ModuleBase and the other misc information is already available through perf or uORB

src/drivers/batt_smbus/batt_smbus.cpp

@@ -475,13 +475,6 @@ int BATT_SMBUS::manufacturer_name(uint8_t *man_name, const uint8_t length)
 	return result;
 }
 
-int BATT_SMBUS::print_status()
-{
-	PX4_INFO("Running");
-	print_message(_last_report);
-	return 0;
-}
-
 int BATT_SMBUS::manufacturer_read(const uint16_t cmd_code, void *data, const unsigned length)
 {
 	uint8_t code = BATT_SMBUS_MANUFACTURER_BLOCK_ACCESS;

src/drivers/batt_smbus/batt_smbus.h

@@ -141,9 +141,6 @@ public:
 	/** @see ModuleBase */
 	static int task_spawn(int argc, char *argv[]);
 
-	/** @see ModuleBase::print_status() */
-	int print_status() override;
-
 	/**
 	 * @brief Reads data from flash.
 	 * @param address The address to start the read from.

src/drivers/distance_sensor/pga460/pga460.cpp

@@ -464,12 +464,6 @@ void PGA460::print_diagnostics(const uint8_t diagnostic_byte)
 	}
 }
 
-int PGA460::print_status()
-{
-	PX4_INFO("Distance: %2.2f", (double)_previous_valid_report_distance);
-	return PX4_OK;
-}
-
 int PGA460::print_usage(const char *reason)
 {
 	if (reason) {

src/drivers/distance_sensor/pga460/pga460.h

@@ -267,11 +267,6 @@ public:
 	 */
 	void print_diagnostics(const uint8_t diagnostic_byte);
 
-	/**
-	 * Diagnostics - print some basic information about the driver.
-	 */
-	int print_status() override;
-
 	/**
 	 * @brief Reads the threshold registers.
 	 * @return Returns true if the threshold registers are set to default

src/drivers/safety_button/SafetyButton.cpp

@@ -199,14 +199,6 @@ SafetyButton::custom_command(int argc, char *argv[])
 	return print_usage("unknown command");
 }
 
-int
-SafetyButton::print_status()
-{
-	PX4_INFO("Safety State (from button): %s", _safety_btn_off ? "off" : "on");
-
-	return 0;
-}
-
 int
 SafetyButton::print_usage(const char *reason)
 {

src/drivers/safety_button/SafetyButton.hpp

@@ -62,9 +62,6 @@ public:
 	/** @see ModuleBase */
 	static int print_usage(const char *reason = nullptr);
 
-	/** @see ModuleBase::print_status() */
-	int print_status() override;
-
 	void Run() override;
 
 	int Start();