treewide: remove redundant definitions from package Makefiles

package/gluon-alfred/Makefile

package/gluon-authorized-keys/Makefile

package/gluon-autoupdater/Makefile

package/gluon-client-bridge/Makefile

package/gluon-config-mode-autoupdater/Makefile

package/gluon-config-mode-contact-info/Makefile

package/gluon-config-mode-core/Makefile

package/gluon-config-mode-domain-select/Makefile

package/gluon-config-mode-geo-location/Makefile

package/gluon-config-mode-hostname/Makefile

package/gluon-config-mode-mesh-vpn/Makefile

package/gluon-config-mode-theme/Makefile

package/gluon-core/Makefile

package/gluon-ebtables-filter-multicast/Makefile

package/gluon-ebtables-filter-ra-dhcp/Makefile

package/gluon-ebtables-limit-arp/Makefile

package/gluon-ebtables-source-filter/Makefile

package/gluon-ebtables/Makefile

package/gluon-l3roamd/Makefile

package/gluon-lock-password/Makefile