target: globally remove ARCH_PACKAGES overrides

target/linux/adm5120/rb1xx/target.mk

target/linux/adm5120/router_be/target.mk

target/linux/adm5120/router_le/target.mk

target/linux/malta/be/target.mk

target/linux/malta/be64/target.mk

target/linux/malta/le/target.mk

target/linux/malta/le64/target.mk

target/linux/ramips/mt7620/target.mk

target/linux/ramips/mt7621/target.mk

target/linux/ramips/mt7628/target.mk

target/linux/ramips/mt7688/target.mk

target/linux/ramips/rt305x/target.mk

target/linux/ramips/rt3883/target.mk

target/linux/x86/64/target.mk