Remove redundant semicolons

Source/Core/DolphinQt/Debugger/WatchWidget.h

@@ -18,7 +18,7 @@ namespace Core
 {
 class CPUThreadGuard;
 class System;
-};  // namespace Core
+}  // namespace Core
 
 class WatchWidget : public QDockWidget
 {

Source/Core/DolphinQt/GCMemcardManager.cpp

@@ -65,7 +65,7 @@ Slot OtherSlot(Slot slot)
 {
   return slot == Slot::A ? Slot::B : Slot::A;
 }
-};  // namespace
+}  // namespace
 
 struct GCMemcardManager::IconAnimationData
 {

Source/Core/DolphinQt/InfinityBase/InfinityBaseWindow.cpp

@@ -50,7 +50,7 @@ InfinityBaseWindow::InfinityBaseWindow(QWidget* parent) : QWidget(parent)
   installEventFilter(this);
 
   OnEmulationStateChanged(Core::GetState(Core::System::GetInstance()));
-};
+}
 
 InfinityBaseWindow::~InfinityBaseWindow() = default;
 

Source/Core/DolphinQt/MenuBar.h

@@ -24,7 +24,7 @@ enum class State;
 namespace DiscIO
 {
 enum class Region;
-};
+}
 
 namespace UICommon
 {

Source/Core/DolphinQt/SkylanderPortal/SkylanderPortalWindow.cpp

@@ -81,7 +81,7 @@ SkylanderPortalWindow::SkylanderPortalWindow(QWidget* parent) : QWidget(parent)
   m_collection_path = QDir::toNativeSeparators(skylanders_folder.path()) + QDir::separator();
   m_last_skylander_path = m_collection_path;
   m_path_edit->setText(m_collection_path);
-};
+}
 
 SkylanderPortalWindow::~SkylanderPortalWindow() = default;