Merge pull request #1054 from edx/han/remove-json-lint-script

removing json_lint.sh script

util/json_lint.sh

-#!/bin/bash
-# A very simple check to see if the json files in the project at least compile.
-# If they do not, a cryptic message that might be helpful is produced.
-
-
-# Save current directory so we can come back; change to repo root
-STARTED_FROM=`pwd`
-cd $(git rev-parse --show-toplevel)
-
-# Do very basic syntax check of every json file to make sure it's valid format
-for file in `find . -iname '*.json'`; do 
-    cat $file | python -m json.tool 1>/dev/null 2>json_complaint.err; 
-    retval=$?
-    if [ $retval != 0 ]; then
-        echo "JSON errors in $file"
-        cat json_complaint.err
-        rm -f json_complaint.err
-        cd $STARTED_FROM
-        exit $retval;
-    fi
-done
-
-# Everything went ok!
-rm -f json_complaint.err
-cd $STARTED_FROM
-exit 0