10347: Remove the setEnv warning in manhole_ssh

[pmw]

Scope and purpose

On connection, the manhole gave a warning about the TerminalSession object not providing ISessionSetEnv interface. It should just ignore this silently, so the warning has been removed

Contributor Checklist:

• The associated ticket in Trac is here: https://twistedmatrix.com/trac/ticket/10347
• I ran tox -e lint to format my patch to meet the Twisted Coding Standard
• I have created a newsfragment in src/twisted/newsfragments/ (see: News files)
• The title of the PR starts with the associated Trac ticket number (without the # character).
• I have updated the automated tests and checked that all checks for the PR are green.
• I have submitted the associated Trac ticket for review by adding the word review to the keywords field in Trac, and putting a link to this PR in the comment; it shows up in https://twisted.reviews/ now.
• The merge commit will use the below format
  The first line is automatically generated by GitHub based on PR ID and branch name.
  The other lines generated by GitHub should be replaced.

Merge pull request #123 from twisted/4356-branch-name-with-trac-id

Author: pmw
Reviewer: <github_username>, <github_username_if_more_reviewers>
Fixes: ticket:10347

[exarkun]

Thank. This looks good to me.

[pmw]

Excellent, thanks!

…

On Wed, 25 May 2022, at 12:29, Jean-Paul Calderone wrote: ***@***.**** approved this pull request. Thank. This looks good to me. — Reply to this email directly, view it on GitHub <#1733 (review)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AADGWQBSL6N4HGJH34JW7RTVLYFIHANCNFSM5W4W7KLA>. You are receiving this because you authored the thread.Message ID: ***@***.***>