D8094: Port RuleBook::discardUsed from Client to AbstractClient

[Martin Flöser]

graesslin added a dependency: D8090: Move WindowRules from Client to AbstractClient.

REPOSITORY
  R108 KWin

REVISION DETAIL
  https://phabricator.kde.org/D8094

To: graesslin, #kwin, #plasma
Cc: plasma-devel, kwin, bwowk, ZrenBot, progwolff, lesliezhai, ali-mohamed, hardening, jensreuterberg, abetts, sebas, apol, mart
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