message: Remove repeated CHANGELOG entry.
diff: @@ -123,10 +123,6 @@ Miscellaneous
  - The integration order used in the ComputeLpError and ComputeElementLpError
  methods of class GridFunction has been increased.
  -- Added a new IterativeSolverMonitor class that allows to monitor the residual
  - and solution during the solving process of an IterativeSolver after every
  - iteration.
  -
  Version 4.1, released on March 10, 2020
  =======================================
  