Simplify and cleanup in small areas

[CrazyInfin8]

This isn't the most important PR since it doesn't really fix anything or improve performance by much, but I found a few cases where code could be simplified a tiny bit.

Each commit explains what changed and why but essentially:

1. if (!Force && !finished && reversed == Reversed)
   {
       paused = false;
       finished = false; // finished is already false due to if condition
       return;
   }

2. function get_hue():Float
   {
       var hueRad = Math.atan2(Math.sqrt(3) * (greenFloat - blueFloat), 2 * redFloat - greenFloat - blueFloat);
       var hue:Float = 0;
       if (hueRad != 0)
       {
           // The Math.atan2 part of below is already calculated by hueRad
           hue = 180 / Math.PI * Math.atan2(Math.sqrt(3) * (greenFloat - blueFloat), 2 * redFloat - greenFloat - blueFloat);
           hue = 180 / Math.PI * hueRad;
       }
   
       return hue < 0 ? hue + 360 : hue;
   }

3. in FlxColor.setHSChromaMatch(), the saturation field isn't used and could be removed. (I decided to rename it setHueChromaMatch() but the name doesn't really matter)

[CrazyInfin8]

Is it possible to rerun those failing checks? it looks as if they failed because Haxelib couldn't download the necessary packages at the time that the tests were running.

[Geokureli]

Thanks!