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/bt.cpp b/tools/bt.cpp
index 297bc30..c49aecf 100644
--- a/tools/bt.cpp
+++ b/tools/bt.cpp
@@ -1,8 +1,7 @@
 #include "bt.hpp"
 
-#include "blob_errors.hpp"
-
 #include <cstdint>
+#include <ipmiblob/blob_errors.hpp>
 #include <vector>
 
 namespace host_tool
@@ -37,7 +36,7 @@
             }
         } while (bytesRead > 0);
     }
-    catch (const BlobException& b)
+    catch (const ipmiblob::BlobException& b)
     {
         sys->close(inputFd);
         return false;