The function parseInitData appears to be unused. Deleted.

Change-Id: I7d4efed9d2519cfbd0ba03d89b45add8b314ea84
Reviewed-on: https://go-review.googlesource.com/118556
Run-TryBot: Robert Griesemer <gri@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>