AP_GPS: Nova: Remove unneeded injection override

libraries/AP_GPS/AP_GPS_NOVA.cpp

@@ -290,17 +290,6 @@ AP_GPS_NOVA::process_message(void)
     return false;
 }
 
-void
-AP_GPS_NOVA::inject_data(const uint8_t *data, uint16_t len)
-{
-    if (port->txspace() > len) {
-        last_injected_data_ms = AP_HAL::millis();
-        port->write(data, len);
-    } else {
-        Debug("NOVA: Not enough TXSPACE");
-    }
-}
-
 #define CRC32_POLYNOMIAL 0xEDB88320L
 uint32_t AP_GPS_NOVA::CRC32Value(uint32_t icrc)
 {

libraries/AP_GPS/AP_GPS_NOVA.h

@@ -32,8 +32,6 @@ public:
     // Methods
     bool read() override;
 
-    void inject_data(const uint8_t *data, uint16_t len) override;
-
     const char *name() const override { return "NOVA"; }
 
 private:
@@ -59,7 +57,6 @@ private:
     static const char* const _initialisation_blob[6];
    
     uint32_t crc_error_counter = 0;
-    uint32_t last_injected_data_ms = 0;
 
     struct PACKED nova_header
     {