JFX: SWT_GTK3=0 is no longer required

* This also fixes a "hidden" crash: The error message is sometimes not
  visible.

Issue-Ref: 3721
Issue-Url: https://af3-developer.fortiss.org/issues/3721


Signed-off-by: Alexander Diewald <diewald@fortiss.org>

org.fortiss.tooling.common.ui/src/org/fortiss/tooling/common/ui/javafx/.ratings

-AF3FXViewPart.java 1af5c5fba174c2f81ebdde4e90552a8501f1d86e GREEN

org.fortiss.tooling.common.ui/src/org/fortiss/tooling/common/ui/javafx/AF3FXViewPart.java

@@ -22,8 +22,6 @@ import java.util.ResourceBundle;
 
 import org.apache.commons.lang3.SystemUtils;
 import org.eclipse.fx.ui.workbench3.FXViewPart;
-import org.eclipse.swt.SWT;
-import org.eclipse.swt.widgets.Composite;
 import org.eclipse.ui.part.ViewPart;
 
 import javafx.application.Platform;
@@ -102,21 +100,6 @@ public abstract class AF3FXViewPart extends FXViewPart implements Initializable
 		this.cssLocation = cssLocation;
 	}
 
-	/** {@inheritDoc} */
-	@Override
-	public void createPartControl(Composite parent) {
-		if("gtk".equals(System.getProperty("osgi.ws"))) {
-			if(!"0".equals(System.getenv("SWT_GTK3"))) {
-				org.eclipse.swt.widgets.Label errorLabel =
-						new org.eclipse.swt.widgets.Label(parent, SWT.BOLD);
-				errorLabel.setText("Cannot show JavaFX view without setting SWT_GTK3 to '0'.\n" +
-						"Please relaunch Eclipse using a terminal and 'SWT_GTK3=0 ./eclipse' command.");
-				return;
-			}
-		}
-		super.createPartControl(parent);
-	}
-
 	/** {@inheritDoc} */
 	@Override
 	protected Scene createFxScene() {