Gif.cpp: removed redundant using std::min

pcsx2/Gif.cpp

@@ -22,8 +22,6 @@
 
 #include "iR5900.h"
 
-using std::min;
-
 // A three-way toggle used to determine if the GIF is stalling (transferring) or done (finished).
 // Should be a gifstate_t rather then int, but I don't feel like possibly interfering with savestates right now.
 static int  gifstate = GIF_STATE_READY;