use ipmiblob library from ipmi-blob-tool

Drop all code that is now handled by the ipmiblob library provided by
the new ipmi-blob-tool.  This is a library that can be included on the
BMC if necessary, but relies on nothing that is strictly meant for the
BMC.

Change-Id: Iadbf0bd89c58cafc436fba05ea43e21c49e2b669
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/tools/updater.hpp b/tools/updater.hpp
index adee496..0a66f34 100644
--- a/tools/updater.hpp
+++ b/tools/updater.hpp
@@ -1,8 +1,8 @@
 #pragma once
 
-#include "blob_interface.hpp"
 #include "interface.hpp"
 
+#include <ipmiblob/blob_interface.hpp>
 #include <string>
 
 namespace host_tool
@@ -17,7 +17,7 @@
  * @param[in] signaturePath - the path to the signature file.
  * @throws ToolException on failures.
  */
-void updaterMain(BlobInterface* blob, DataInterface* handler,
+void updaterMain(ipmiblob::BlobInterface* blob, DataInterface* handler,
                  const std::string& imagePath,
                  const std::string& signaturePath);