Update G5243_ADS.md

CourseInfo/G5243_ADS.md

@@ -40,13 +40,12 @@ This course will have a total of *four* project cycles. Each project cycle follo
 
 Except for project 1, students will be working in teams of 5 that will be randomly formed. For a meaningful experience in data science, students are expected to collaborate and work together on all the stages of a project. Code sharing and brainstorming are great opportunities to learn from each other. 
 
-We will have a total of five project cycles for this course (topics are subject to change):
+We will have a total of four project cycles for this course (topics are subject to change):
 
 1. [Individual] R notebook for exploratory data analysis 
 2. Shiny app for interactive data visualization project.
 3. Predictive analytics of images.
 4. Algorithms implementation, evaluation, and reproducibility challenge.
-5. [optional] *Free topic*.
 
 Below is a tentative schedule for Fall 2021 we will follow.