Fix preconditioner
Description
Fix the routine preconditioner_apply_batch call for multigrid preconditioner in combination of RMMDIIS. Fix an unused variable.
News snippet
ix the preconditioner_apply_batch call for multigrid preconditioner in combination of RMMDIIS.
Checklist
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I have checked that my code follows the Octopus coding standards -
I have added tests for all the new features added in this request.