D9220: [KOpenWithDialog] Remove redundant creation of KLineEdit

[David Faure]

dfaure accepted this revision.
This revision is now accepted and ready to land.

REPOSITORY
  R241 KIO

REVISION DETAIL
  https://phabricator.kde.org/D9220

To: anthonyfieroni, dfaure, mwolff
Cc: #frameworks
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