Follow-up of 9d4344a78c -> ensure printbed always rendered as custom in gcode preview mode

src/libslic3r/GCode/GCodeProcessor.cpp

@@ -694,7 +694,6 @@ bool GCodeProcessor::process_producers_tags(const std::string& comment)
 
 bool GCodeProcessor::process_prusaslicer_tags(const std::string& comment)
 {
-    std::cout << comment << "\n";
     return false;
 }