scripts/gen-refs-default.Makefile: cleanup

Remove unnecessary vars and echoes.

Signed-off-by: Daniel Gomez <[email protected]>

gitref: generate user agent kdevops header identifier

Avoids forbidden requests from kernel.org in CI deployments.

User-Agent documentation:
https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/
User-Agent

kdevops forbidden requests report thread:
https://lore.kernel.org/kdevops/
q3gayrsulu424e2qr5eg7zfs2rgy5ucluuw73o2pjcxmehvvmp@qxy723fyda3x/

Signed-off-by: Daniel Gomez <[email protected]>

Author: dkruces

scripts/gen-refs-default.Makefile

@@ -3,12 +3,10 @@
 REFS_DEFAULT_TARGETS := gen_refs_def_mainline
 REFS_DEFAULT_TARGETS += gen_refs_def_next
 REFS_DEFAULT_TARGETS += gen_refs_def_stable
-REF_DEF_SRC  := $(addprefix $(TOPDIR)/workflows/linux/refs/static/,  linus.yaml next.yaml stable.yaml)
 
 KRELEASES_FORCE := $(if $(filter --force,$(KRELEASES_FORCE)),--force,)
 
 gen_refs_def_mainline:
-	$(Q)$(E) "Generating $@..."
 	$(Q)./scripts/generate_refs.py \
 		--prefix BOOTLINUX_TREE_LINUS \
 		--output workflows/linux/refs/default/Kconfig.linus \
@@ -18,7 +16,6 @@ gen_refs_def_mainline:
 		--moniker mainline
 
 gen_refs_def_next:
-	$(Q)$(E) "Generating $@..."
 	$(Q)./scripts/generate_refs.py \
 		--prefix BOOTLINUX_TREE_NEXT \
 		--output workflows/linux/refs/default/Kconfig.next \
@@ -28,7 +25,6 @@ gen_refs_def_next:
 		--moniker linux-next
 
 gen_refs_def_stable:
-	$(Q)$(E) "Generating $@..."
 	$(Q)./scripts/generate_refs.py \
 		--prefix BOOTLINUX_TREE_STABLE \
 		--output workflows/linux/refs/default/Kconfig.stable \