Remove unused variable.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>

libavcodec/g723_1.c

@@ -209,7 +209,6 @@ static int normalize_bits(int num, int width)
 {
     int i = 0;
     int bits = (width) ? 31 : 15;
-    int limit = 1 << (bits - 1);
 
     if (num) {
         if (num == -1)