In view of Sage modularization, this ticket removes the only import from sage.manifolds in the module sage.tensor.modules.
This was an import of Chart in FreeModuleTensor._preparse_display. This is avoided by reimplementing _preparse_display in TensorFieldParal.

CC: @mkoeppe @tscrim

Component: manifolds

Keywords: tensor display

Author: Eric Gourgoulhon

Branch/Commit: 1635bd3

Reviewer: Matthias Koeppe

Issue created by migration from https://trac.sagemath.org/ticket/32708