Switch remaining TLS resumption tests to EmbeddedTestServer

Most of the tests weren't actually using the recording features of
ssl-session-cache. The one test that did was merely testing that
resumption happened. SSLInfo suffices for that.

This lets us delete the session cache recording machinery, which is less
code to port to Python 3.

Bug: 492672, 1248530
Change-Id: I888a2b626f155c0544b1f5fe51a907e3917d40d4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3156550
Commit-Queue: David Benjamin <davidben@chromium.org>
Reviewed-by: Matt Mueller <mattm@chromium.org>
Cr-Commit-Position: refs/heads/main@{#921518}
NOKEYCHECK=True
GitOrigin-RevId: 656f1c2b727432bf6029f899d13c975ff23b81be
1 file changed