Removed SetSystemClockPrescaler() macro, the clock_prescale_set() avr-libc macro has been corrected in recent avr-libc versions

Demos/KeyboardViaInt/KeyboardViaInt.c

@@ -76,8 +76,8 @@ int main(void)
 	MCUSR &= ~(1 << WDRF);
 	wdt_disable();
 
-	/* Disable Clock Division */
-	SetSystemClockPrescaler(0);
+	/* Disable clock division */
+	clock_prescale_set(clock_div_1);
 
 	/* Hardware Initialization */
 	Joystick_Init();