D26182: qsrand is deprecated in qt5.15. I don't know why theses lines were still hereas we don't use qrand

[Laurent Montel]

mlaurent created this revision.
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REVISION SUMMARY
  Remove unused qsrand

TEST PLAN
  autotest ok

REPOSITORY
  R278 KWindowSystem

BRANCH
  remove_unused_qsrand (branched from master)

REVISION DETAIL
  https://phabricator.kde.org/D26182

AFFECTED FILES
  autotests/netrootinfotestwm.cpp
  autotests/netwininfotestclient.cpp
  autotests/netwininfotestwm.cpp

To: mlaurent
Cc: kde-frameworks-devel, LeGast00n, GB_2, michaelh, ngraham, bruns