Don't use title annotations in metadata

[rossburton]

I'm ripping the self-titled Tracy Chapman album and have the choice of the following titles:

Title : Tracy Chapman (EW 835, mixed-case “Made in Germany” on disc)
Title : Tracy Chapman (WE 835, newer ‘e above E’ Elektra logo on disc)
Title : Tracy Chapman
Title : Tracy Chapman (WE 851, no red circle around CD rim, newer "e above E" Elektra logo on disc)
Title : Tracy Chapman (WE 835, old Elektra logo and new cat# on disc, approx. 1994/95)
Title : Tracy Chapman (EW 835, upper-case “MADE IN GERMANY” on disc, 1999+)
Title : Tracy Chapman (WE 851, old Elektra logo, short cat# on disc and inlay, WME matrix)

Those comments are useful to disambiguate the release, but they're not useful in metadata. The same problem has been happening for other albums such as 'Corinne Bailey Rae/Corinne Bailey Rae (single column tracklisting on back of case)' and 'Kate Bush/The Whole Story (EMI SWINDON)'.

Please consider not embedding the release annotation (wish I could remember the field name) in the metadata, but only displaying it when asking the user to pick a release (so related to #617).

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