D26970: Remove use of deprecated KDialog, fix two warnings

[Méven Car]

This revision was automatically updated to reflect the committed changes.
Closed by commit R119:fb71ced98460: Remove use of deprecated KDialog, fix two warnings (authored by meven).

REPOSITORY
  R119 Plasma Desktop

CHANGES SINCE LAST UPDATE
  https://phabricator.kde.org/D26970?vs=74516&id=74525

REVISION DETAIL
  https://phabricator.kde.org/D26970

AFFECTED FILES
  kcms/dateandtime/dtime.cpp
  kcms/dateandtime/main.cpp

To: meven, #plasma, ervin
Cc: plasma-devel, Orage, LeGast00n, The-Feren-OS-Dev, jraleigh, zachus, fbampaloukas, GB_2, ragreen, ZrenBot, ngraham, alexeymin, himcesjf, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, ahiemstra, mart
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