make: remove old clnrest directory

Changelog-None

Author: daywalker90

Makefile

@@ -816,6 +816,7 @@ install-program: installdirs $(BIN_PROGRAMS) $(PKGLIBEXEC_PROGRAMS) $(PLUGINS) $
 	@$(NORMAL_INSTALL)
 	$(INSTALL_PROGRAM) $(BIN_PROGRAMS) $(DESTDIR)$(bindir)
 	$(INSTALL_PROGRAM) $(PKGLIBEXEC_PROGRAMS) $(DESTDIR)$(pkglibexecdir)
+	@if [ -d "$(DESTDIR)$(plugindir)/clnrest" ]; then rm -rf $(DESTDIR)$(plugindir)/clnrest; fi
 	[ -z "$(PLUGINS)" ] || $(INSTALL_PROGRAM) $(PLUGINS) $(DESTDIR)$(plugindir)
 	for PY in $(PY_PLUGINS); do DIR=`dirname $$PY`; DST=$(DESTDIR)$(plugindir)/`basename $$DIR`; if [ -d $$DST ]; then rm -rf $$DST; fi; $(INSTALL_PROGRAM) -d $$DIR; cp -a $$DIR $$DST ; done