Remove quickstart guide references to address legal concerns

- Removed "Open Quickstart Guide" menu item and associated functions
- Replaced ROM loading error popup containing quickstart guide links
  with a neutral disclaimer stating the software is provided as-is
  without warranty or support
- This change helps minimize legal liability by avoiding
  specific instructional content while directing users to community
  resources for assistance

src/citron/main.cpp

@@ -1539,7 +1539,6 @@ void GMainWindow::ConnectMenuEvents() {
     connect_menu(ui->action_Stop, &GMainWindow::OnStopGame);
     connect_menu(ui->action_Report_Compatibility, &GMainWindow::OnMenuReportCompatibility);
     connect_menu(ui->action_Open_Mods_Page, &GMainWindow::OnOpenModsPage);
-    connect_menu(ui->action_Open_Quickstart_Guide, &GMainWindow::OnOpenQuickstartGuide);
     connect_menu(ui->action_Open_FAQ, &GMainWindow::OnOpenFAQ);
     connect_menu(ui->action_Restart, &GMainWindow::OnRestartGame);
     connect_menu(ui->action_Configure, &GMainWindow::OnConfigure);
@@ -1844,9 +1843,7 @@ bool GMainWindow::LoadROM(const QString& filename, Service::AM::FrontendAppletPa
                     tr("Error while loading ROM! %1", "%1 signifies a numeric error code.")
                         .arg(QString::fromStdString(error_code));
                 const auto description =
-                    tr("%1<br>Please follow <a href='https://citron-emu.org/help/quickstart/'>the "
-                       "citron quickstart guide</a> to redump your files.<br>You can refer "
-                       "to the citron wiki</a> or the citron Discord</a> for help.",
+                    tr("%1<br>This software is provided as-is without any warranty or support.<br>Please refer to community resources or documentation for assistance.",
                        "%1 signifies an error string.")
                         .arg(QString::fromStdString(
                             GetResultStatusString(static_cast<Loader::ResultStatus>(error_id))));
@@ -3578,10 +3575,6 @@ void GMainWindow::OnOpenModsPage() {
     OpenURL(QUrl(QStringLiteral("https://git.citron-emu.org/Citron/Citron/wiki/Switch-Mods")));
 }
 
-void GMainWindow::OnOpenQuickstartGuide() {
-    OpenURL(QUrl(QStringLiteral("https://citron-emu.org/help/quickstart/")));
-}
-
 void GMainWindow::OnOpenFAQ() {
     OpenURL(QUrl(QStringLiteral("https://citron-emu.org/wiki/faq/")));
 }

src/citron/main.h

@@ -336,7 +336,6 @@ private slots:
     void OnPrepareForSleep(bool prepare_sleep);
     void OnMenuReportCompatibility();
     void OnOpenModsPage();
-    void OnOpenQuickstartGuide();
     void OnOpenFAQ();
     /// Called whenever a user selects a game in the game list widget.
     void OnGameListLoadFile(QString game_path, u64 program_id);

src/citron/main.ui

@@ -360,11 +360,6 @@
     <string>Open &amp;Mods Page</string>
    </property>
   </action>
-  <action name="action_Open_Quickstart_Guide">
-   <property name="text">
-    <string>Open &amp;Quickstart Guide</string>
-   </property>
-  </action>
   <action name="action_Open_FAQ">
    <property name="text">
     <string>&amp;FAQ</string>