Revert "[doc] Add addition of BCRSMatrix::setIndicesNoSort() to change log."

This reverts commit 89c8e02e.

CHANGELOG.md

@@ -12,11 +12,6 @@ SPDX-License-Identifier: LicenseRef-GPL-2.0-only-with-DUNE-exception
 - Base the implementation of `VariableBlockVector` on `std::vector` as the storage type. Note that
   this prevents from using `bool` as block type that was possible before.
 
-- A method `BCRSMatrix::setIndicesNoSort()` was added. Similar
-  to `BCRSMatrix::setIndices()` this allows to insert all indices
-  of a row at once, but - incontrast to the latter - does not sort them.
-  This allows to speed up insertion if indices are already sorted.
-
 - `UMFPACK` is extended to arbitrary blocked matrix structures. This includes `MultiTypeBlockMatrix`. The external interface is unchanged.
   However, internally the `BCCSMatrixInitializer` is replaced by direct calls of `flatMatrixForEach` similar to `Cholmod`. This requires a
   compatible vector field of "ignored" degrees of freedom. The method `setSubMatrix` with a top-level index set is preserved for compatibility.