[recipes] Simplify test/perf dirs

Bug: skia:6473
Change-Id: Iee2f195ddf4bbcdabc1580f2a021d2e9a07ff0b2
Reviewed-on: https://skia-review.googlesource.com/133441
Commit-Queue: Eric Boren <borenet@google.com>
Reviewed-by: Ben Wagner <benjaminwagner@google.com>
95 files changed