PatternWin32ManualTest: suppress Discouraged access warning

The type 'DPIUtil' is not API (restriction on required project
'org.eclipse.swt.win32.win32.x86_64')

tests/org.eclipse.swt.tests.win32/ManualTests/org/eclipse/swt/widgets/PatternWin32ManualTest.java

@@ -33,6 +33,7 @@ public class PatternWin32ManualTest {
 	private static Display display = Display.getDefault();
 
 	public static void main (String [] args) {
+		@SuppressWarnings("restriction")
 		int zoom = DPIUtil.getDeviceZoom();
 		int scalingFactor = 3;
 		int scaledZoom = zoom * scalingFactor;