Remove "-b" from Odesong-b

[apple502j]

Expected Behavior

"-b" should be used when 2 have the same name

Actual Behavior

Odesong-a doesn't exist

Steps to Reproduce

1. open sound library
2. search for "odesong"

Operating System and Browser

any (me:Windows 7 HomePremium 64bit SP1 Firefox 61.0.1)

[towerofnix]

Note odesong-a, alongside odesong-c, was used in Ode to Code - Make Your Own Dance, but doesn't exist in the sound library (in either 2.0 or 3.0).