configuration_shared: Remove unused functions

These were only kept for compatibility with old code during testing.

src/yuzu/configuration/configuration_shared.cpp

@@ -10,16 +10,6 @@
 #include "yuzu/configuration/configuration_shared.h"
 #include "yuzu/configuration/configure_per_game.h"
 
-void ConfigurationShared::ApplyPerGameSetting(Settings::Setting<bool>* setting,
-                                              const QCheckBox* checkbox) {
-    if (checkbox->checkState() == Qt::PartiallyChecked) {
-        setting->SetGlobal(true);
-    } else {
-        setting->SetGlobal(false);
-        setting->SetValue(checkbox->checkState() == Qt::Checked);
-    }
-}
-
 void ConfigurationShared::ApplyPerGameSetting(Settings::Setting<bool>* setting,
                                               const QCheckBox* checkbox,
                                               const CheckState& tracker) {
@@ -142,12 +132,6 @@ void ConfigurationShared::SetColoredComboBox(QComboBox* combobox, QWidget* targe
                      });
 }
 
-void ConfigurationShared::InsertGlobalItem(QComboBox* combobox) {
-    const QString use_global_text = ConfigurePerGame::tr("Use global configuration");
-    combobox->insertItem(ConfigurationShared::USE_GLOBAL_INDEX, use_global_text);
-    combobox->insertSeparator(ConfigurationShared::USE_GLOBAL_SEPARATOR_INDEX);
-}
-
 void ConfigurationShared::InsertGlobalItem(QComboBox* combobox, int global_index) {
     const QString use_global_text =
         ConfigurePerGame::tr("Use global configuration (%1)").arg(combobox->itemText(global_index));

src/yuzu/configuration/configuration_shared.h

@@ -26,7 +26,6 @@ enum class CheckState {
 
 void ApplyPerGameSetting(Settings::Setting<bool>* setting, const QCheckBox* checkbox,
                          const CheckState& tracker);
-void ApplyPerGameSetting(Settings::Setting<bool>* setting, const QCheckBox* checkbox);
 void ApplyPerGameSetting(Settings::Setting<int>* setting, const QComboBox* combobox);
 void ApplyPerGameSetting(Settings::Setting<Settings::RendererBackend>* setting,
                          const QComboBox* combobox);
@@ -48,7 +47,6 @@ void SetColoredTristate(QCheckBox* checkbox, const std::string& name, bool globa
 void SetColoredComboBox(QComboBox* combobox, QWidget* target, const std::string& target_name,
                         int global);
 
-void InsertGlobalItem(QComboBox* combobox);
 void InsertGlobalItem(QComboBox* combobox, int global_index);
 
 } // namespace ConfigurationShared