I have successfully compiled and created a Java installer. However, I don't want those izpack things on the installation windows. Is there a way inside install.xmml to get rid of those things ?
Yes you can easily do that.
What type of things you don't want to show? I am quoting an example here that will help you to add your heading.
Adding headline to you custom panel To add heading to your custom panel add following line to you lanuage pack xml file. Go to IzPack\bin\langpacks\installer open your language pack xml file e.g eng.xml. Add this line ere TestPanel is the name of your panel and text in txt="Test Heading" is the heading to be shown in TestPanel.