remove legacy ipmid.cpp and ipmid.hpp

These two files have now been replaced with newer APIs and can be removed.

Change-Id: If60227b24188c6796211ca43379169f9a95c9cb3
Signed-off-by: Vernon Mauery <vernon.mauery@linux.intel.com>
diff --git a/include/ipmid/api.h b/include/ipmid/api.h
index b1c078b..f08ee11 100644
--- a/include/ipmid/api.h
+++ b/include/ipmid/api.h
@@ -152,4 +152,8 @@
 sd_event* ipmid_get_sd_event_connection(void);
 sd_bus_slot* ipmid_get_sd_bus_slot(void);
 
+// move this from ipmid.hpp, which is now gone
+// this should not be used. Use the channel API to get the channel size
+#define MAX_IPMI_BUFFER 64
+
 #endif