Update README.md

Author: alanedelman

README.md

@@ -85,13 +85,9 @@ Final Project reports due: May 11
 # HW
 |#| Notebook|
 |-|-|
-|1| [HW1](https://mitmath.github.io/18337/hw1/hw1.html) |
-(For matrix calculus problems, do not use indices)
-|2| [HW2](https://mitmath.github.io/18337/hw2/hw2_2023.html) Due Wednesday March 1, 2023 |
-|3| [HW3](https://github.com/mitmath/18337/blob/master/hw3/18_337_2023_pset3.pdf )  Due Wednesday March 15, 2023|
-|4| [HW4](https://github.com/mitmath/18337/blob/master/hw4.pdf) Due Wednesday April 19, 2023 |
 
-# Lecture Schedule (tentative)
+
+# Lecture Schedule (Old: from 2023)
 |#|Day| Date |  Topic | [SciML](https://book.sciml.ai/) lecture | Materials |
 |-|-|------|------|-----|--|
 |1|M| 2/6 | Intro to Julia.  My Two Favorite Notebooks. |  |   [[Julia is fast]](https://github.com/mitmath/18337/blob/master/lecture1/Julia%20is%20fast.ipynb), [[AutoDiff]](https://github.com/mitmath/18337/blob/master/lecture1/AutoDiff.ipynb), [[autodiff video]](https://www.youtube.com/watch?v=vAp6nUMrKYg),