AP_Baro: remove pointless destructor overrides

libraries/AP_Baro/AP_Baro_BMP280.h

@@ -17,7 +17,6 @@ public:
     static AP_Baro_Backend *probe(AP_Baro &baro, AP_HAL::OwnPtr<AP_HAL::Device> dev);
 
 private:
-    virtual ~AP_Baro_BMP280(void) {};
 
     bool _init(void);
     void _timer(void);

libraries/AP_Baro/AP_Baro_ICM20789.h

@@ -21,8 +21,7 @@ public:
     
 private:
     AP_Baro_ICM20789(AP_Baro &baro, AP_HAL::OwnPtr<AP_HAL::Device> dev);
-    virtual ~AP_Baro_ICM20789(void) {};
-    
+
     bool init();
     bool send_cmd16(uint16_t cmd);
 

libraries/AP_Baro/AP_Baro_KellerLD.h

@@ -44,7 +44,6 @@ public:
 
 private:
     AP_Baro_KellerLD(AP_Baro &baro, AP_HAL::OwnPtr<AP_HAL::Device> dev);
-    virtual ~AP_Baro_KellerLD(void) {};
 
     bool _init();
 

libraries/AP_Baro/AP_Baro_LPS25H.h

@@ -21,7 +21,6 @@ public:
     static AP_Baro_Backend *probe(AP_Baro &baro, AP_HAL::OwnPtr<AP_HAL::Device> dev);
 
 private:
-    virtual ~AP_Baro_LPS25H(void) {};
 
     bool _init(void);
     void _timer(void);

libraries/AP_Baro/AP_Baro_MS5611.h

@@ -38,8 +38,7 @@ private:
                                              uint8_t *count, uint8_t max_count);
 
     AP_Baro_MS56XX(AP_Baro &baro, AP_HAL::OwnPtr<AP_HAL::Device> dev, enum MS56XX_TYPE ms56xx_type);
-    virtual ~AP_Baro_MS56XX(void) {};
-    
+
     bool _init();
 
     void _calculate_5611();