Remove extra header inclusion

Change-Id: I4f77b3731a52d8a8271e827d017ef2e8b7923fe6
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/ipmid.cpp b/ipmid.cpp
index 1f61ce2..6e24bce 100644
--- a/ipmid.cpp
+++ b/ipmid.cpp
@@ -10,7 +10,6 @@
 #include <map>
 #include <memory>
 #include <phosphor-logging/log.hpp>
-#include "ipmid.hpp"
 #include <sys/time.h>
 #include <errno.h>
 #include <mapper.h>