HLE: Remove an unused function

There is nothing using PanicAlert in either official titles or libogc.

Source/Core/Core/HLE/HLE.cpp

@@ -45,8 +45,6 @@ static const SPatch OSPatches[] = {
     // Placeholder, OSPatches[0] is the "non-existent function" index
     {"FAKE_TO_SKIP_0",               HLE_Misc::UnimplementedFunction,       HLE_HOOK_REPLACE, HLE_TYPE_GENERIC},
 
-    {"PanicAlert",                   HLE_Misc::HLEPanicAlert,               HLE_HOOK_REPLACE, HLE_TYPE_DEBUG},
-
     // Name doesn't matter, installed in CBoot::BootUp()
     {"HBReload",                     HLE_Misc::HBReload,                    HLE_HOOK_REPLACE, HLE_TYPE_GENERIC},
 

Source/Core/Core/HLE/HLE_Misc.cpp

@@ -6,7 +6,6 @@
 
 #include "Common/CommonTypes.h"
 #include "Common/Logging/Log.h"
-#include "Common/MsgHandler.h"
 #include "Core/GeckoCode.h"
 #include "Core/HW/CPU.h"
 #include "Core/Host.h"
@@ -21,14 +20,6 @@ void UnimplementedFunction()
   NPC = LR;
 }
 
-// If you want a function to panic, you can rename it PanicAlert :p
-// Don't know if this is worth keeping.
-void HLEPanicAlert()
-{
-  ::PanicAlert("HLE: PanicAlert %08x", LR);
-  NPC = LR;
-}
-
 void HBReload()
 {
   // There isn't much we can do. Just stop cleanly.

Source/Core/Core/HLE/HLE_Misc.h

@@ -6,7 +6,6 @@
 
 namespace HLE_Misc
 {
-void HLEPanicAlert();
 void UnimplementedFunction();
 void HBReload();
 void GeckoCodeHandlerICacheFlush();