fix more codacy errors. Some of them had been in from the beginning, but codacy didn't mention all

Author: Joe Wegner

app/src/cc/arduino/contributions/ContributionsSelfCheck.java

@@ -36,7 +36,6 @@
 import cc.arduino.contributions.packages.filters.UpdatablePlatformPredicate;
 import cc.arduino.view.NotificationPopup;
 import org.apache.logging.log4j.LogManager;
-import org.apache.logging.log4j.Logger;
 import processing.app.*;
 
 import javax.swing.*;

app/src/cc/arduino/view/NotificationPopup.java

@@ -50,8 +50,6 @@
 import javax.swing.event.HyperlinkListener;
 
 import cc.arduino.Constants;
-import org.apache.logging.log4j.LogManager;
-import org.apache.logging.log4j.Logger;
 import processing.app.PreferencesData;
 import processing.app.Theme;
 
@@ -124,10 +122,14 @@ public void mouseClicked(MouseEvent e) {
       optionalButton1.addMouseListener(button1Action);
 
       KeyListener button1Key = new KeyListener() {
+        // Ignore when the key is typed - only act once the key is released
         public void keyTyped(KeyEvent e) {
+          // do nothing here, wait until the key is released
         }
 
+        // Ignore when the key is pressed - only act once the key is released
         public void keyPressed(KeyEvent e) {
+          // do nothing here, wait until the key is released
         }
 
         public void keyReleased(KeyEvent e) {