Fixed remove_ext syntax

fslanimate

@@ -54,7 +54,7 @@ cd $tmpdir
 
 $FSLDIR/bin/avwsplit $im 
 for fnm in `$FSLDIR/bin/imglob vol*` ; do
-  num=`echo $fnm | $FSLDIR/bin/remove_ext | sed 's/vol//'`;  export num;
+  num=`$FSLDIR/bin/remove_ext $fnm | sed 's/vol//'`;  export num;
   echo $num; 
   $FSLDIR/bin/slicer $fnm -s 2 -a ${iout}_$num.pgm
   ${FSLCONVERT} ${iout}_$num.pgm ${iout}_$num.gif