kconfig: qconf: remove "goBack" debug message

Every time the goback icon is clicked, the annoying message "goBack"
is displayed on the console.

I guess this line is the left-over debug code of commit af737b4defe1
("kconfig: qconf: simplify the goBack() logic").

Signed-off-by: Masahiro Yamada <[e-mail]>

scripts/kconfig/qconf.cc

···
 
 void ConfigMainWindow::goBack(void)
 {
-qInfo() << __FUNCTION__;
 	if (configList->rootEntry == &rootmenu)
 		return;