system: Get rid of an unnecessary enum typedef

src/core/system.h

@@ -11,7 +11,7 @@
 namespace System {
 
 // State of the full emulator
-typedef enum {
+enum State {
 	STATE_NULL = 0, ///< System is in null state, nothing initialized
 	STATE_IDLE,     ///< System is in an initialized state, but not running
 	STATE_RUNNING,  ///< System is running
@@ -20,7 +20,7 @@ typedef enum {
 	STATE_STALLED,  ///< System is stalled (unused)
 	STATE_DEBUG,    ///< System is in a special debug mode (unused)
 	STATE_DIE       ///< System is shutting down
-} State;
+};
 
 extern volatile State g_state;