tools: ynl: don't install tests

make's install target is meant for installing the production
artifacts, AFAIU. Don't install test_ynl_cli and test_ynl_ethtool
from under the main YNL install target. The install target
under tests/ is retained in case someone wants the tests
to be installed.

Fixes: 308b7dee3e ("tools: ynl: add YNL test framework")
Reviewed-by: Hangbin Liu <[email protected]>
Reviewed-by: Donald Hunter <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

tools/net/ynl/Makefile

@@ -51,7 +51,6 @@ install: libynl.a lib/*.h
 	@echo -e "\tINSTALL pyynl"
 	@pip install --prefix=$(DESTDIR)$(prefix) .
 	@make -C generated install
-	@make -C tests install
 
 run_tests:
 	@$(MAKE) -C tests run_tests