Remove a duplicated command.

src/traces/tracer.cpp

@@ -92,11 +92,6 @@ Tracer::Tracer( const std::string n )
     addCommand("start",
 	       makeCommandVoid0(*this,&Tracer::start,doc ));
 
-    doc = docCommandVoid0("Stop temporarily the tracing process.");
-    addCommand("stop",
-	       makeCommandVoid0(*this,&Tracer::stop,doc ));
-
-
     doc = docCommandVoid0("Stop temporarily the tracing process.");
     addCommand("stop",
 	       makeCommandVoid0(*this,&Tracer::stop,doc ));