Update README.md

Author: japamment

README.md

@@ -16,8 +16,6 @@ The course covers:
   - [Python working with data Slides](https://github.com/ncasuk/ncas-isc/tree/main/python-data/slides) 
   - [Exercises - Jupyter Notebooks](https://github.com/ncasuk/ncas-isc/tree/main/python-data/notebooks) | [Solutions](https://github.com/ncasuk/ncas-isc/tree/main/python-data/solutions)
 - Example code for all python modules
-  - [Example code](https://github.com/ncasuk/ncas-isc/tree/main/example_code)
-  - [Example data](https://github.com/ncasuk/ncas-isc/tree/main/example_data)
   - [Example code for Python (Working with Data)](https://github.com/ncasuk/ncas-isc/tree/main/python-data/example_code)
   - [Example data for Python (Working with Data)](https://github.com/ncasuk/ncas-isc/tree/main/python-data/example_data)