refactor: get rid of superfluous rule

Makefile

@@ -65,9 +65,9 @@ $(WEAVEUTIL_EXE): prog/weaveutil/*.go
 $(SIGPROXY_EXE): prog/sigproxy/*.go
 $(DOCKERPLUGIN_EXE): prog/plugin/*.go plugin/net/*.go plugin/ipam/*.go plugin/skel/*.go api/*.go common/docker/*.go
 $(TEST_TLS_EXE): test/tls/*.go
+$(WEAVEWAIT_NOOP_EXE): prog/weavewait/*.go
 $(WEAVEWAIT_EXE): prog/weavewait/*.go net/*.go
 $(WEAVEWAIT_NOMCAST_EXE): prog/weavewait/*.go net/*.go
-$(WEAVEWAIT_NOOP_EXE): prog/weavewait/*.go
 
 $(WEAVER_EXE) $(WEAVEPROXY_EXE):
 ifeq ($(COVERAGE),true)
@@ -88,7 +88,7 @@ $(WEAVEUTIL_EXE):
 # These next programs need separate rules as they fail the netgo check in
 # the main build stanza due to not importing net package
 
-$(SIGPROXY_EXE) $(DOCKERPLUGIN_EXE) $(TEST_TLS_EXE):
+$(SIGPROXY_EXE) $(DOCKERPLUGIN_EXE) $(TEST_TLS_EXE) $(WEAVEWAIT_NOOP_EXE):
 	go get -tags netgo ./$(@D)
 	go build $(BUILD_FLAGS) -o $@ ./$(@D)
 
@@ -100,9 +100,6 @@ $(WEAVEWAIT_NOMCAST_EXE):
 	go get -tags netgo ./$(@D)
 	go build $(BUILD_FLAGS) -tags "netgo iface" -o $@ ./$(@D)
 
-$(WEAVEWAIT_NOOP_EXE):
-	go get -tags netgo ./$(@D)
-	go build $(BUILD_FLAGS) -o $@ ./$(@D)
 
 $(WEAVER_UPTODATE): prog/weaver/Dockerfile $(WEAVER_EXE)
 	$(SUDO) DOCKER_HOST=$(DOCKER_HOST) docker build -t $(WEAVER_IMAGE) prog/weaver