remove out-dated and unused shell script

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@39060 15284696-431f-4ddb-bdfa-cd5b030d7da7

tools/g51.extract_description.sh

@@ -1,29 +0,0 @@
-#!/bin/sh
-
-#fetch the description stuff from HTML pages for 5.7
-
-GRASS57=$HOME/grass57
-
-########################
-
-if [ $# -ne 2 ] ; then
- echo g51.extract_description.sh /path/to/grass53src htmlfile
- exit
-fi
-
-PATHGRASS50="$1"
-
-FILE=$PATHGRASS50/html/html/$2.html
-
-CUTLINE="`grep -ni '<H2>DESCRIPTION' $FILE | cut -d':' -f1`"
-if [ "$CUTLINE" == "" ] ; then
-  echo "ERROR: no <H2>DESCRIPTION</H2> present in html file"
-  exit
-fi
-
-TOTALLINES=`wc -l $FILE  | awk '{print $1}'`
-FROMBOTTOM=$(( $TOTALLINES - $CUTLINE ))
-
-echo "<H2>DESCRIPTION</H2>" > description.html
-echo "" >> description.html
-tail -$FROMBOTTOM $FILE | grep -vi '</body>' | grep -vi '</html>' >> description.html