Update README.md

Author: PyNumAl

README.md

@@ -32,7 +32,4 @@ Numerical Analysis algorithms/methods in Python.
   - Problems of the special form $\frac{d^{2}y}{dt^{2}} = f(t,y)$
     - Runge-Kutta-Nystrom methods (**work in progress**)
   - General second-order ODEs $\frac{d^{2}y}{dt^{2}} = f(t,y,\frac{dy}{dt})$
-    - Runge-Kutta-Nystrom-Generalized (RKNG) methods
-      - **Direct** RKNG pairs (orders **4** to **7**)
-      - Transformed Nystrom pairs (**work in progress**)
-    - Direct Adams-Bashforth-Moulton (DABM) methods (**work in progress**)
+    - Runge-Kutta-Nystrom-Generalized (RKNG) methods (**work in progress**)