[GRASS-git] [OSGeo/grass] 453d01: g.extension: Remove six dependency (#2828)

[Vaclav Petras]

  Branch: refs/heads/releasebranch_8_2
  Home:   https://github.com/OSGeo/grass
  Commit: 453d0194f0aa1c64016a98d3a1e24527fbccb34b
      https://github.com/OSGeo/grass/commit/453d0194f0aa1c64016a98d3a1e24527fbccb34b
  Author: Vaclav Petras <wenzeslaus at gmail.com>
  Date:   2023-02-21 (Tue, 21 Feb 2023)

  Changed paths:
    M scripts/g.extension.all/g.extension.all.py
    M scripts/g.extension/g.extension.py

  Log Message:
  -----------
  g.extension: Remove six dependency (#2828)

* Removes imports from six, uses standard Python 3 imports.
* Removes Python <=2.4 ElementTree import.
* Removes future print_function imports.

Removes six only from g.extension and g.extension.all. Leaves the rest as is.