update dp60 configuration (#7561)

update dp60 configuration (#7561)

* update dp60 configuration

* disable rgb underglow to avoid firmware overflow

* cleanup rules.mk

* Update keyboards/dp60/keymaps/allleds/rules.mk

Co-Authored-By: fauxpark <fauxpark@gmail.com>
* Update keyboards/dp60/keymaps/allleds/rules.mk

Co-Authored-By: fauxpark <fauxpark@gmail.com>
* Update keyboards/dp60/keymaps/allleds/rules.mk

Co-Authored-By: fauxpark <fauxpark@gmail.com>
* Update keyboards/dp60/keymaps/allleds/rules.mk

Co-Authored-By: fauxpark <fauxpark@gmail.com>
* Update keyboards/dp60/keymaps/allleds/rules.mk

Co-Authored-By: fauxpark <fauxpark@gmail.com>
* cleanup all rules.mk