[!782] Revert "[!670] Loopsimd alignment"

Merge branch 'revert-3c5922d7' into 'master'

ref:core/dune-common\> This reverts merge request [!670]

As explained by @carsten.graeser the compiler costs increased dramatically.
Let's revert this MR until we sorted out the actual problem and keep the
compile time in the usual bounds.

See merge request [!782]

  [!670]: gitlab.dune-project.org/NoneNone/merge_requests/670
  [!782]: gitlab.dune-project.org/core/dune-common/merge_requests/782