removed modes.pl from Mutagenesis example
removed modes.pl from Mutagenesis example

Seems the file was erroneously introduced

AKSW/DL-Learning-Benchmark,AKSW/SML-Bench,AKSW/SML-Bench,AKSW/SML-Bench,AKSW/SML-Bench,AKSW/DL-Learning-Benchmark,AKSW/SML-Bench