Revert "Audit uses of IsRunning and GetState"

This reverts commit 72cf2bdb87.

SYSCONF settings are getting cleared when they shouldn't be. Let's
revert the change until I get proper time to figure out why it's broken.

Source/Core/Core/ConfigLoaders/BaseConfigLoader.cpp

@@ -33,7 +33,7 @@ namespace ConfigLoaders
 {
 void SaveToSYSCONF(Config::LayerType layer, std::function<bool(const Config::Location&)> predicate)
 {
-  if (!Core::IsUninitialized(Core::System::GetInstance()))
+  if (Core::IsRunning(Core::System::GetInstance()))
     return;
 
   IOS::HLE::Kernel ios;
@@ -183,7 +183,7 @@ public:
 private:
   void LoadFromSYSCONF(Config::Layer* layer)
   {
-    if (!Core::IsUninitialized(Core::System::GetInstance()))
+    if (Core::IsRunning(Core::System::GetInstance()))
       return;
 
     IOS::HLE::Kernel ios;

Source/Core/Core/Core.cpp

@@ -211,11 +211,6 @@ bool IsRunningOrStarting(Core::System& system)
   return state == State::Running || state == State::Starting;
 }
 
-bool IsUninitialized(Core::System& system)
-{
-  return s_state.load() == State::Uninitialized;
-}
-
 bool IsCPUThread()
 {
   return tls_is_cpu_thread;
@@ -242,7 +237,7 @@ bool Init(Core::System& system, std::unique_ptr<BootParameters> boot, const Wind
 {
   if (s_emu_thread.joinable())
   {
-    if (!IsUninitialized(system))
+    if (IsRunning(system))
     {
       PanicAlertFmtT("Emu Thread already running");
       return false;

Source/Core/Core/Core.h

@@ -134,13 +134,8 @@ void UndeclareAsHostThread();
 
 std::string StopMessage(bool main_thread, std::string_view message);
 
-// Returns true when GetState returns Running or Paused.
 bool IsRunning(Core::System& system);
-// Returns true when GetState returns Starting, Running or Paused.
 bool IsRunningOrStarting(Core::System& system);
-// Returns true when GetState returns Uninitialized.
-bool IsUninitialized(Core::System& system);
-
 bool IsCPUThread();  // this tells us whether we are the CPU thread.
 bool IsGPUThread();
 bool IsHostThread();