Remove cpp11 from benchmarks, it is slow and it does not work on razorblade because <regex> is not implemented in libstdc++ there.
Remove cpp11 from benchmarks, it is slow and it does not work on razorblade because <regex> is not implemented in libstdc++ there.

diku-kmc/kleenexlang,diku-kmc/kleenexlang,diku-kmc/repg,diku-kmc/kleenexlang,diku-kmc/kleenexlang,diku-kmc/kleenexlang,diku-kmc/repg,diku-kmc/kleenexlang,diku-kmc/repg,diku-kmc/repg,diku-kmc/repg,diku-kmc/repg