Jonathan Amsterdam f12461cb0f go/doc: remove unused top-level declarations from playable example
When we synthesize a playable example, prune declarations that may be
in the original example file but aren't used by the example.

This is ported from pkgsite, where it fixed #43658.

Change-Id: I41e6d4c28afa993c77c8a82b47bd86ba15ed13b7
Reviewed-on: https://go-review.googlesource.com/c/go/+/401758
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Jonathan Amsterdam <jba@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
2022-05-10 23:13:45 +00:00
2022-05-04 20:06:32 +00:00
2022-05-08 17:28:26 +00:00
2022-05-08 17:28:26 +00:00
2016-06-01 22:40:04 +00:00
2010-12-06 16:31:59 -05:00
2022-04-26 16:21:18 +00:00

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