reflect: remove depth from deepequal recursion
reflect: remove depth from deepequal recursion

We aren't using it for anything. The visited map will terminate
any recursion for us.

Change-Id: I36e6bd8e34952123c2ed46323067e42928ec7168
Reviewed-on: https://go-review.googlesource.com/c/go/+/238759
Run-TryBot: Keith Randall <8c99c3a9284e493be632950b84cd789d08ed3e9d@golang.org>
TryBot-Result: Gobot Gobot <66cb808b70d30c07676d5e946fee83fd561249e5@golang.org>
Reviewed-by: Emmanuel Odeke <277f8eaa8c7dfbc55c17bf5e30561c1a9c45c569@gmail.com>

nawawi/go,CAFxX/go,cloudflare/go,golang/go,golang/go,CAFxX/go,cloudflare/go,golang/go,cloudflare/go,CAFxX/go,golang/go,cloudflare/go,nawawi/go,nawawi/go,nawawi/go,golang/go,CAFxX/go,CAFxX/go,cloudflare/go,golang/go,cloudflare/go,cloudflare/go,CAFxX/go,CAFxX/go,nawawi/go,golang/go,cloudflare/go,golang/go,nawawi/go,nawawi/go,nawawi/go,CAFxX/go