Delete duplicated configuration options

Klipper's configuration dialog has duplicated options
kcfg_ReplayActionInHistory + kcfg_StripWhiteSpace on
the General + Actions page.

Commit log of Revision 1052730 (added kcfg_ReplayActionInHistory
+ kcfg_StripWhiteSpace to actionsconfig.ui) reads:
'Move actions-related config to action config dialog...'

Apparently it was forgotten to delete these actions from generalconfig.ui,
so in fact it was a Copy not a Move.
REVIEW:102150

(cherry picked from commit 3326a0f1c58809176020be54aa17d52ca94878ef)