How do I disable the Quick edit module?
As far as I understand your question, you want to get rid of the "Edit" pen icon, displayed when you put the mouse over a node.

This is not provided by the "Quick Edit" module. You have to disable "Contextual Links" if you want to get rid of that menu.

Alternatively, if you are using those links for managing blocks for example, you might want to force hiding contextual links on nodes via CSS.

For example:

.your-node-selector .contextual {
  display: none!important;
}