veyron/tools/*: Remove dependence on rt.R()/rt.Init()

Change-Id: I2dd04028a2eaefdf99efa1177926dada7d54f91c
diff --git a/tools/profile/impl_test.go b/tools/profile/impl_test.go
index 1dd149d..b442271 100644
--- a/tools/profile/impl_test.go
+++ b/tools/profile/impl_test.go
@@ -108,7 +108,13 @@
 }
 
 func TestProfileClient(t *testing.T) {
-	runtime := rt.Init()
+	var err error
+	runtime, err = rt.New()
+	if err != nil {
+		t.Fatalf("Unexpected error initializing runtime: %s", err)
+	}
+	defer runtime.Cleanup()
+
 	server, endpoint, err := startServer(t, runtime)
 	if err != nil {
 		return