Remove unused enableAutoScaling property of Device on Windows

The property "enableAutoScaling" has been introduced the Device class in
the Windows implementation for HiDPI support year ago, but it has never
been used. This removes the unused property.

Author: HeikoKlare

bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/Device.java

@@ -56,9 +56,6 @@ public abstract class Device implements Drawable {
 
 	volatile boolean disposed;
 
-	/* Auto-Scaling*/
-	boolean enableAutoScaling = true;
-
 	/*
 	* TEMPORARY CODE. When a graphics object is
 	* created and the device parameter is null,
@@ -939,14 +936,6 @@ public void setWarnings (boolean warnings) {
 	checkDevice ();
 }
 
-boolean getEnableAutoScaling() {
-	return enableAutoScaling;
-}
-
-void setEnableAutoScaling(boolean value) {
-	enableAutoScaling = value;
-}
-
 /**
  * Gets the scaling factor from the device and calculates the zoom level.
  * @return zoom in percentage