Fix compiler warning

utility/imxrt_hw.cpp

@@ -31,7 +31,7 @@
 #include "imxrt_hw.h"
 
 PROGMEM
-void set_audioClock(int nfact, int32_t nmult, uint32_t ndiv, bool force = false) // sets PLL4
+void set_audioClock(int nfact, int32_t nmult, uint32_t ndiv, bool force) // sets PLL4
 {
 	if (!force && (CCM_ANALOG_PLL_AUDIO & CCM_ANALOG_PLL_AUDIO_ENABLE)) return;