[issue2935] Remove redundant 'n' variable in parsers.parse_index2()

[Andrey]

New submission from Andrey <py4fun at gmail.com>:

After 
'13261:20a54bdf2328 Matt Mackall 2011-01-12 20:54 pure: update index parsing'
the 'n' variable is not used in pure.parsers.parse_index2() function

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messages: 17024
nosy: py4fun
priority: wish
status: unread
title: Remove redundant 'n' variable in parsers.parse_index2()

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