Fix unused field warning in PatriotViperSteel controller

Author: CalcProgrammer1

Controllers/PatriotViperSteelController/PatriotViperSteelController.h

@@ -50,5 +50,4 @@ class PatriotViperSteelController
     i2c_smbus_interface *bus;
     viper_dev_id dev;
     unsigned char mode;
-    unsigned char speed;
 };