remove IRS menu

i added the irs menu when i wanted to mess around with the sensor on the joycon.
since then, i have used it a total of 0 times, and i don't think any users use it either.

sphaira/source/ui/menus/main_menu.cpp

@@ -11,7 +11,6 @@
 #include "download.hpp"
 #include "defines.hpp"
 #include "i18n.hpp"
-#include "ui/menus/usb_menu.hpp"
 
 #include <cstring>
 #include <minizip/unzip.h>
@@ -210,7 +209,7 @@ MainMenu::MainMenu() {
     this->SetActions(
         std::make_pair(Button::START, Action{App::Exit}),
         std::make_pair(Button::SELECT, Action{[this](){
-            App::Push(std::make_shared<ui::menu::usb::Menu>());
+            App::DisplayMiscOptions();
         }}),
         std::make_pair(Button::Y, Action{"Menu"_i18n, [this](){
             auto options = std::make_shared<Sidebar>("Menu Options"_i18n, "v" APP_VERSION_HASH, Sidebar::Side::LEFT);