trivial: Remove inaccurate comments

Author: PatchMixolydic

source/gx/gtk/cairo.d

@@ -179,10 +179,8 @@ void renderImage(Context cr, ImageSurface isSource, int outputWidth, int outputH
             double yScale = to!double(outputHeight) / to!double(isSource.getHeight());
 
             if (xScale < yScale) {
-                // fit to x axis
                 yScale = xScale;
             } else {
-                // fit to y axis
                 xScale = yScale;
             }
 
@@ -266,4 +264,4 @@ public:
     @property bool canDraw() {
         return _canDraw;
     }
-}
+}