Revert "CellList memory usage hints"
Revert "CellList memory usage hints"

This reverts commit 684acd360ea432fa471ad334d0d842b646c21eee.

joaander/hoomd-blue,joaander/hoomd-blue,joaander/hoomd-blue,joaander/hoomd-blue,joaander/hoomd-blue,joaander/hoomd-blue