CompThr: Delete shutdownInd & exceptionInd

We no longer need them because we now have
mrntt::mrntt.finalizeReq(), which does a more holistic job of
shutting down Marionette (and thus, ultimately, Salmanoff).

smocore/include/marionette/marionette.h

@@ -15,6 +15,7 @@ namespace mrntt {
 
 extern std::atomic<int> exitCode;
 void exitMarionetteLoop();
+void marionetteFinalizeReqCb(bool success);
 extern mrntt::MarionetteComponent mrntt;
 
 } // namespace mrntt