[GRASS-git] [OSGeo/grass-addons] 93f6fe: Fix python3 warnings and errors in v.surf.icw (#355)

[Stephen Mather]

  Branch: refs/heads/master
  Home:   https://github.com/OSGeo/grass-addons
  Commit: 93f6fe57cb28f6f2104f62352f3288a5b84c3e50
      https://github.com/OSGeo/grass-addons/commit/93f6fe57cb28f6f2104f62352f3288a5b84c3e50
  Author: Stephen Mather <1174901+smathermather at users.noreply.github.com>
  Date:   2020-12-02 (Wed, 02 Dec 2020)

  Changed paths:
    M grass7/vector/v.surf.icw/v.surf.icw.py

  Log Message:
  -----------
  Fix python3 warnings and errors in v.surf.icw (#355)

* fix python3 warnings
* futurize
* remove auto added python3