Remove trailing comma in pluralEquations object
Remove trailing comma in pluralEquations object

Although most JS bundlers will remove it, trailing commas will cause
runtime errors in IE7 and below.

iafan/Plurr,iafan/Plurr,iafan/Plurr,iafan/Plurr,iafan/Plurr,iafan/Plurr,iafan/Plurr