stop installing manager header

Stop installing the manager header as it is no longer meant to be
exported, but rather used only internally within this repository.

Change-Id: I2ab21a31fd745e1b3e36fc39ffea5e26d373ff51
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/main.cpp b/main.cpp
index bc93ddd..dd755e6 100644
--- a/main.cpp
+++ b/main.cpp
@@ -17,12 +17,12 @@
 #include "config.h"
 
 #include "ipmi.hpp"
+#include "manager.hpp"
 #include "process.hpp"
 #include "utils.hpp"
 
 #include <host-ipmid/ipmid-api.h>
 
-#include <blobs-ipmid/manager.hpp>
 #include <cstdio>
 #include <host-ipmid/iana.hpp>
 #include <host-ipmid/oemopenbmc.hpp>