D26585: Get rid of -Wdeprecated-copy warning

[Ismael Asensio]

iasensio created this revision.
iasensio added reviewers: elvisangelaccio, Dolphin.
Herald added a project: Dolphin.
Herald added a subscriber: kfm-devel.
iasensio requested review of this revision.

REVISION SUMMARY
  Remove the explicit copy constructor of `KItemListStyleOption`, since it does not
  add any logic to what the implicit copy constructor does, but triggers a compiler
  warning if we don't overload `operator=` too.

TEST PLAN
  Compiles without `-Wdeprecated-copy` warning
  No behavior changes

REPOSITORY
  R318 Dolphin

BRANCH
  deprecated_copy_remove (branched from master)

REVISION DETAIL
  https://phabricator.kde.org/D26585

AFFECTED FILES
  src/kitemviews/kitemliststyleoption.cpp
  src/kitemviews/kitemliststyleoption.h

To: iasensio, elvisangelaccio, #dolphin
Cc: kfm-devel, pberestov, iasensio, fprice, MrPepe, fbampaloukas, alexde, Codezela, feverfew, meven, spoorun, navarromorales, firef, ngraham, andrebarros, emmanuelp, mikesomov
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