mainwindow: Remove unused QSerialPort
Summary:
Signed-off-by: Patrick José Pereira <patrickelectric@gmail.com>
Correct QtTest include
Signed-off-by: Patrick José Pereira <patrickelectric@gmail.com>
Reviewers: rizzitello, tcanabrava
Reviewed By: rizzitello
Differential Revision: https://phabricator.kde.org/D17761