Remove dashboard components from plugins

Hello,

as we remove the dasboard from core we need to remove the components in plugins :

• systems
• opsi
• ppolicy

Cheers

changed milestone to %FusionDirectory 1.4

added PJ1802-0188 plugin-opsi plugin-ppolicy plugin-systems labels

assigned to @tdockx

marked this issue as related to fd#6280 (closed)

created branch 6232-remove-dashboard-components-from-plugins to address this issue

mentioned in commit e7695056