configuration: Clean up includes a bit

src/yuzu/configuration/configuration_shared.h

@@ -4,14 +4,12 @@
 #pragma once
 
 #include <forward_list>
-#include <iterator>
 #include <memory>
-#include <QCheckBox>
-#include <QComboBox>
+#include <QString>
 #include <QWidget>
 #include <qobjectdefs.h>
-#include "common/settings.h"
-#include "yuzu/configuration/shared_translation.h"
+
+class QObject;
 
 namespace ConfigurationShared {
 
@@ -29,16 +27,4 @@ private:
     std::shared_ptr<std::forward_list<Tab*>> group;
 };
 
-constexpr int USE_GLOBAL_INDEX = 0;
-constexpr int USE_GLOBAL_SEPARATOR_INDEX = 1;
-constexpr int USE_GLOBAL_OFFSET = 2;
-
-// CheckBoxes require a tracker for their state since we emulate a tristate CheckBox
-enum class CheckState {
-    Off,    // Checkbox overrides to off/false
-    On,     // Checkbox overrides to on/true
-    Global, // Checkbox defers to the global state
-    Count,  // Simply the number of states, not a valid checkbox state
-};
-
 } // namespace ConfigurationShared