Remove ambigous function

...: error: call of overloaded ‘tone(uint8_t, unsigned int)’ is ambiguous
       tone( pin, frequency );
                            ^
In file included from ...
.../.gem/ruby/gems/arduino_ci-0.1.10/cpp/arduino/Godmode.h:100:13: note: candidate: void tone(uint8_t, unsigned int, long unsigned int)
 inline void tone(uint8_t _pin, unsigned int frequency, unsigned long duration = 0) {}
             ^~~~
.../.gem/ruby/gems/arduino_ci-0.1.10/cpp/arduino/Godmode.h:101:13: note: candidate: void tone(uint8_t, unsigned int)
 inline void tone(uint8_t _pin, unsigned int frequency) {}
             ^~~~

Author: hlovdal

cpp/arduino/Godmode.h

@@ -93,7 +93,6 @@ void analogWrite(uint8_t, int);
 
 // TODO: issue #26 to track the commanded state here
 inline void tone(uint8_t _pin, unsigned int frequency, unsigned long duration = 0) {}
-inline void tone(uint8_t _pin, unsigned int frequency) {}
 inline void noTone(uint8_t _pin) {}