tools: ynl: don't regen on every make

As far as I can tell the normal Makefile dependency tracking
works, generated files get re-generated if the YAML was updated.
Let make do its job, don't force the re-generation.
make hardclean can be used to force regeneration.
Acked-by: Stanislav Fomichev <sdf@google.com>
Link: https://lore.kernel.org/r/20231003153416.2479808-3-kuba@kernel.orgSigned-off-by: Jakub Kicinski <kuba@kernel.org>

tools/net/ynl/Makefile

@@ -3,7 +3,6 @@
 SUBDIRS = lib generated samples
 
 all: $(SUBDIRS)
-	./ynl-regen.sh -f -p $(PWD)/../../../
 
 $(SUBDIRS):
 	@if [ -f "$@/Makefile" ] ; then \

tools/net/ynl/generated/Makefile

@@ -19,7 +19,7 @@ SRCS=$(patsubst %,%-user.c,${GENS})
 HDRS=$(patsubst %,%-user.h,${GENS})
 OBJS=$(patsubst %,%-user.o,${GENS})
 
-all: protos.a $(HDRS) $(SRCS) $(KHDRS) $(KSRCS) $(UAPI) regen
+all: protos.a $(HDRS) $(SRCS) $(KHDRS) $(KSRCS) $(UAPI)
 
 protos.a: $(OBJS)
 	@echo -e "\tAR $@"