breath_compute: Use default arguments instead of three methods

Thanks to Michael Richters (@gedankenexperimenter) for the suggestion!

Signed-off-by: Gergely Nagy <algernon@keyboard.io>

src/LEDUtils.cpp

@@ -1,15 +1,5 @@
 #include "LEDUtils.h"
 
-cRGB
-breath_compute() {
-  return breath_compute(170);
-}
-
-cRGB
-breath_compute(uint8_t hue) {
-  return breath_compute(hue, 255);
-}
-
 cRGB
 breath_compute(uint8_t hue, uint8_t saturation) {
   // This code is adapted from FastLED lib8tion.h as of dd5d96c6b289cb6b4b891748a4aeef3ddceaf0e6

src/LEDUtils.h

@@ -2,7 +2,5 @@
 
 #include <Kaleidoscope.h>
 
-cRGB breath_compute(void);
-cRGB breath_compute(uint8_t hue);
-cRGB breath_compute(uint8_t hue, uint8_t saturation);
+cRGB breath_compute(uint8_t hue = 170, uint8_t saturation = 255);
 cRGB hsvToRgb(uint16_t h, uint16_t s, uint16_t v);