sage.tensor.modules: remove dependency on sage.manifolds

[egourgoulhon]

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

[egourgoulhon]

Commit: 1635bd3

[egourgoulhon]

New commits:

1635bd3

Remove import of Chart in sage.tensor.modules (#32708)

[egourgoulhon]

Branch: public/manifolds/no_chart_import_in_tensor_modules-32708

[mkoeppe]

Reviewer: Matthias Koeppe

[egourgoulhon]

comment:3

Thank you for the review!

[vbraun]

Changed branch from public/manifolds/no_chart_import_in_tensor_modules-32708 to 1635bd3