Revert "PEL: Create trace wrapper for peltool"

This reverts commit 2ea96f6c6c92bb585668cff7c659cdea606dfc68.

Going to go in a different direction and not build peltool in other
contexts.

Change-Id: I92fefbb3fe5249f2cc0ccf679febe5a3b3340048
diff --git a/extensions/openpower-pels/callout.cpp b/extensions/openpower-pels/callout.cpp
index a1d5ebe..f54d77e 100644
--- a/extensions/openpower-pels/callout.cpp
+++ b/extensions/openpower-pels/callout.cpp
@@ -15,9 +15,7 @@
  */
 #include "callout.hpp"
 
-#include "trace.hpp"
-
-#include <fmt/format.h>
+#include <phosphor-logging/log.hpp>
 
 namespace openpower
 {
@@ -26,6 +24,8 @@
 namespace src
 {
 
+using namespace phosphor::logging;
+
 constexpr size_t locationCodeMaxSize = 80;
 
 Callout::Callout(Stream& pel)
@@ -70,8 +70,8 @@
                 break;
             }
             default:
-                trace::error(
-                    fmt::format("Invalid Callout subsection type {}", type));
+                log<level::ERR>("Invalid Callout subsection type",
+                                entry("CALLOUT_TYPE=0x%X", type));
                 throw std::runtime_error("Invalid Callout subsection type");
                 break;
         }