Remove arm packages from default packages to be built (elastic#7122)

libbeat/scripts/Makefile

@@ -84,7 +84,7 @@ PERM_EXEC?=$(shell [ `uname -s` = "Darwin" ] && echo "+111" || echo "/a+x")
 CGO?=true ## @building if true, Build with C Go support
 TARGETS?="windows/amd64 windows/386 darwin/amd64 linux/arm" ## @building list of platforms/architecture to be built by "make package"
 TARGETS_OLD?="linux/amd64 linux/386" ## @building list of Debian6 architecture to be built by "make package" when CGO is true
-PACKAGES?=${BEAT_NAME}/deb ${BEAT_NAME}/rpm ${BEAT_NAME}/darwin ${BEAT_NAME}/win ${BEAT_NAME}/bin ${BEAT_NAME}/arm ## @Building List of OS to be supported by "make package"
+PACKAGES?=${BEAT_NAME}/deb ${BEAT_NAME}/rpm ${BEAT_NAME}/darwin ${BEAT_NAME}/win ${BEAT_NAME}/bin ## @Building List of OS to be supported by "make package"
 PACKAGES_EXPERIMENTAL?=${BEAT_NAME}/arm ## @Building List of experimental OS by "make package". Only build when SNAPSHOT=yes
 SNAPSHOT?=yes ## @Building If yes, builds a snapshot version
 BEATS_BUILDER_IMAGE?=tudorg/beats-builder ## @Building Name of the docker image to use when packaging the application