[KJots] Drop LocalResourceCreator

Summary:
As I understood, the "create-resource-on-first-start" routine was part of migration to Akonadi process
back in KDE4 times. Now there is firstrun routine in Akonadi and defaultsetup in kdepim-runtime,
which creates default resources including Akonotes.

I think it should be safe to drop it from KJots.
Well, at least I don't see similar routines in other KDEPIM applications.

Since we now use StandardActionManager, we now can also provide user with an action to create a new resource
directly from KJots (if for some reason user don't have default one set up)

Test Plan: make

Reviewers: dvratil

Reviewed By: dvratil

Subscribers: kde-pim

Tags: KDE PIM

Differential Revision: https://phabricator.kde.org/D29773