remove dead code

tools/lammps-gui/lammpsgui.cpp

@@ -855,7 +855,6 @@ void LammpsGui::do_run(bool use_buffer)
     status->repaint();
     start_lammps();
     if (!lammps.is_open()) return;
-    clear();
     capturer->BeginCapture();
 
     runner     = new LammpsRunner(this);
@@ -946,11 +945,6 @@ void LammpsGui::render_image()
     imagewindow->show();
 }
 
-void LammpsGui::clear()
-{
-    ui->textEdit->moveCursor(QTextCursor::Start, QTextCursor::MoveAnchor);
-}
-
 void LammpsGui::view_chart()
 {
     QSettings settings;