RFR: 612: Missing blank lines from quotation in e-mail

[Robin Westberg]

At one point in time, the mailman archive on openjdk.java.net did not word-wrap long lines. To make emails sent by
Skara look nice in the archive, word wrapping was done before sending.

However, this have now changed serverside, and the archive now includes `white-space: pre-wrap;` for the body. See for
example https://mail.openjdk.java.net/pipermail/openjfx-dev/2017-December/021059.html vs
https://mail.openjdk.java.net/pipermail/openjfx-dev/2020-October/027909.html.

Therefore we can simply drop the wordwrapping and avoid the associated bugs.

-------------

Commit messages:
 - Remove word-wrapping code

Changes: https://git.openjdk.java.net/skara/pull/887/files
 Webrev: https://webrevs.openjdk.java.net/?repo=skara&pr=887&range=00
  Issue: https://bugs.openjdk.java.net/browse/SKARA-612
  Stats: 199 lines in 3 files changed: 0 ins; 198 del; 1 mod
  Patch: https://git.openjdk.java.net/skara/pull/887.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/887/head:pull/887

PR: https://git.openjdk.java.net/skara/pull/887