def clear_glyph_libs(glyph):
    if check_lib(glyph) is True:
        for k in glyph.lib.keys():
            del glyph.lib[k]
        glyph.update()

#------------
# guidelines
#------------
Delete all libs in ``glyph``.
dataset/ETHPy150Open gferreira/hTools2/Lib/hTools2/modules/glyphutils.py/clear_glyph_libs