Simplify aos::Init

Most of the variants were to deal with core, which has been gone for a
year.  Simplify those all into InitGoogle.

InitGoogle should be renamed to Init at some point.  It does everything
now.

Change-Id: I738ee03e9c5b2e6348ef33302835f915df68011f
diff --git a/y2020/control_loops/superstructure/superstructure_main.cc b/y2020/control_loops/superstructure/superstructure_main.cc
index c0ac956..a9f071d 100644
--- a/y2020/control_loops/superstructure/superstructure_main.cc
+++ b/y2020/control_loops/superstructure/superstructure_main.cc
@@ -3,8 +3,8 @@
 #include "aos/events/shm_event_loop.h"
 #include "aos/init.h"
 
-int main(int /*argc*/, char * /*argv*/ []) {
-  ::aos::InitNRT();
+int main(int argc, char **argv) {
+  ::aos::InitGoogle(&argc, &argv);
 
   aos::FlatbufferDetachedBuffer<aos::Configuration> config =
       aos::configuration::ReadConfig("config.json");