audio/py-eyed3: update to 0.7.10

• update to 0.7.10
• remove dependency upon magic: it is not used since 0.7.8

Changelog:
0.7.10 - 12.10.2016 (Hollow)

Bug Fixes:
    [issue 97] - Missing import
    [issue 105] - Fix the rendering of default constructed id3.TagHeader
    Fixed Tag.frameiter