Revert "samples: benchmarks: coremark: indicate the broken nRF54H20 DK target"

This reverts commit 7db5d9b.

Jira: NCSDK-36540

Signed-off-by: Mateusz Kapala <[email protected]>

Author: mkapala-nordic

samples/benchmarks/coremark/README.rst

@@ -17,11 +17,6 @@ The sample supports the following development kits:
 
 .. table-from-sample-yaml::
 
-.. note::
-   This sample does not build or run for the ``nrf54h20dk/nrf54h20/cpuapp`` board target due to the IronSide SE migration.
-   See the ``NCSDK-34698`` in the :ref:`known_issues` page for more information.
-   The codebase and documentation will be updated in the future releases to address this issue.
-
 Overview
 ********