Also removes the new linux-ozone-angle-try bot,
since we are no longer interested to test on this configuration.

Bug: angleproject:4483, chromium:1187259
Change-Id: Iaf50ba99905498cee5dbcac27e1cd7c936c8a975
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2822234Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Commit-Queue: Yuly Novikov <ynovikov@chromium.org>