Removed unused header files

Will cause symbol collisions when this repository's local
error yaml is copied out during building so phosphor-logging
includes it in its elog-errors.hpp.

Change-Id: Ic467418106d45b6b49b6cabec304c4ae64a3d76b
Signed-off-by: Matt Spinler <spinler@us.ibm.com>
diff --git a/fault-monitor/fru-fault-monitor.cpp b/fault-monitor/fru-fault-monitor.cpp
index 431a7f4..6771b08 100644
--- a/fault-monitor/fru-fault-monitor.cpp
+++ b/fault-monitor/fru-fault-monitor.cpp
@@ -4,8 +4,6 @@
 #include "xyz/openbmc_project/Led/Mapper/error.hpp"
 #include "elog-errors.hpp"
 #include "fru-fault-monitor.hpp"
-#include <phosphor-logging/elog-errors.hpp>
-#include "xyz/openbmc_project/Common/error.hpp"
 
 namespace phosphor
 {
@@ -42,9 +40,6 @@
 using Interfaces = std::vector<Interface>;
 using MapperResponseType = std::map<Path, std::map<Service, Interfaces>>;
 
-using InternalFailure =
-    sdbusplus::xyz::openbmc_project::Common::Error::InternalFailure;
-
 using MethodErr  =
     sdbusplus::xyz::openbmc_project::Led::Mapper::Error::MethodError;
 using ObjectNotFoundErr =