--- a/Core/Logging.cpp	Fri Mar 02 15:10:37 2018 +0100
+++ b/Core/Logging.cpp	Fri Mar 02 18:25:07 2018 +0100
@@ -133,24 +133,6 @@
         }
       }
     }
-
-    InternalLogger& InternalLogger::operator<< (const std::string& message)
-    {
-      message_ += message;
-      return *this;
-    }
-
-    InternalLogger& InternalLogger::operator<< (const char* message)
-    {
-      message_ += std::string(message);
-      return *this;
-    }
-
-    InternalLogger& InternalLogger::operator<< (int message)
-    {
-      message_ += boost::lexical_cast<std::string>(message);
-      return *this;
-    }
   }
 }
 
@@ -209,24 +191,6 @@
       }
     }
 
-    InternalLogger& InternalLogger::operator<< (const std::string& message)
-    {
-      message_ += message;
-      return *this;
-    }
-
-    InternalLogger& InternalLogger::operator<< (const char* message)
-    {
-      message_ += std::string(message);
-      return *this;
-    }
-
-    InternalLogger& InternalLogger::operator<< (int message)
-    {
-      message_ += boost::lexical_cast<std::string>(message);
-      return *this;
-    }
-
     void EnableInfoLevel(bool enabled)
     {
       globalVerbose_ = enabled;