py_lib/requirements.txt: removed RBTools as I don't use it
py_lib/requirements.txt: removed RBTools as I don't use it

fretboardfreak/code,fretboardfreak/code,fretboardfreak/code,fretboardfreak/code,fretboardfreak/code,fretboardfreak/code,fretboardfreak/code,fretboardfreak/code,fretboardfreak/code