tidy: remove the open preference action, replaced by preference handler

Author: acke

plugin/src/main/java/io/snyk/eclipse/plugin/views/snyktoolview/SnykToolView.java

@@ -96,8 +96,6 @@ public void selectionChanged(SelectionChangedEvent event) {
 				}
 			}
 		});
-
-		makeActions();
 	}
 
 	private void registerTreeContextMeny(Composite parent) {
@@ -142,27 +140,6 @@ private void initBrowserText() {
 				+ "    <p>\n" + snykWarningText + "</body>\n" + "</html>");
 	}
 
-	private void makeActions() {
-		openPrefPage = new Action() {
-
-			@Override
-			public void run() {
-				PreferenceDialog pref = PreferencesUtil.createPreferenceDialogOn(getShell(),
-						"io.snyk.eclipse.plugin.properties.preferencespage", null, null);
-				if (pref != null)
-					pref.open();
-			}
-		};
-		openPrefPage.setText("Preferences");
-	}
-
-	private static Shell getShell() {
-		var activeWorkbenchWindow = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
-		if (activeWorkbenchWindow == null)
-			return SHELL;
-		return activeWorkbenchWindow.getShell();
-	}
-
 	@Override
 	public void setFocus() {
 		treeViewer.getControl().setFocus();