Core: Kill off Host_UpdateLogDisplay()

This was actually never used as far as I can tell. There was no wx event handling done whatsoever for the global ID, So this is basically a dead function.

Source/Core/Core/Boot/Boot.cpp

@@ -429,7 +429,5 @@ bool CBoot::BootUp()
 	// Not part of the binary itself, but either we or Gecko OS might insert
 	// this, and it doesn't clear the icache properly.
 	HLE::Patch(0x800018a8, "GeckoCodehandler");
-
-	Host_UpdateLogDisplay();
 	return true;
 }