remove phosphor-logging dependency

This commit removes pldm's dependency on phosphor-logging
and instead uses stdout and stdcerr for logging purpose.This is to
break the build time circular dependency between pldm and
phosphor-logging.

Change-Id: I8cffa3c99eb34efad5f186b3452a86ebadec2074
Signed-off-by: Sampa Misra <sampmisr@in.ibm.com>
diff --git a/tool/pldm_base_cmd.cpp b/tool/pldm_base_cmd.cpp
index 601635c..f0653e5 100644
--- a/tool/pldm_base_cmd.cpp
+++ b/tool/pldm_base_cmd.cpp
@@ -57,7 +57,7 @@
         if (rc != PLDM_SUCCESS || cc != PLDM_SUCCESS)
         {
             std::cerr << "Response Message Error: "
-                      << "rc=" << rc << ",cc=" << (int)cc << std::endl;
+                      << "rc=" << rc << ",cc=" << (int)cc << "\n";
             return;
         }
 
@@ -128,7 +128,7 @@
         if (rc != PLDM_SUCCESS || cc != PLDM_SUCCESS)
         {
             std::cerr << "Response Message Error: "
-                      << "rc=" << rc << ",cc=" << (int)cc << std::endl;
+                      << "rc=" << rc << ",cc=" << (int)cc << "\n";
             return;
         }
         char buffer[16] = {0};