Removed LICENCE.txt header from *.py source files

# script to remove LICENSE header - not commiting to repo
targetfiles=$(grep -lr --include *.py "Redistribution and use of the software" webapp)
for f in $targetfiles
    do
        if [ $f != "./LICENSE.txt" ];
        then
            sed '1,29d' $f  > temp
            mv temp $f
        fi
    done