In order to remove a module from a course you will need to follow these steps:
1. Click on "Courses" on the left navigation and find the course for which you would like to remove a module.
2. After you find and select the course, click on the "Modules" tab and then check the box next to the module(s) you'd like to remove.
3. Click on the "Remove Modules" button and then on "Remove" in the pop-up box that appears to complete the removal of the module from the course.