reflect: remove the Map benchmarks

They were initially added just as a test, but they've proven to be noisy
and low signal. Remove them.

This CL explicitly leaves behind the "go test" mode of cmd/bench so we
can easily add other "go test" benchmarks back. Right now it just won't
find anything, which is fine.

For #58534.

Change-Id: I60aa8fee3157d83dbabe58e8cefd28aeb2dbf6ec
Reviewed-on: https://go-review.googlesource.com/c/benchmarks/+/468557
Run-TryBot: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
1 file changed