third_party: clean up unused fogleman-* packages

For #58534.

Change-Id: I4e54affc59eda65343b4ccd32aab6291c609f3dc
Reviewed-on: https://go-review.googlesource.com/c/benchmarks/+/468559
Run-TryBot: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
Auto-Submit: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
6 files changed