[PATCH v2 03/24] Remove concurrencytest

[Simon Glass]

While our version is better, it is tricky to use it when we are trying
to package things with pip. Drop it.

Somewhat reduced functionality is provided by the upstream version[1],
along with a rather annoying message each time it is used[2] [3].

[1] pip install concurrencytest
[2] https://github.com/cgoldberg/concurrencytest/issues/12
[3] https://github.com/cgoldberg/concurrencytest/pull/14

Signed-off-by: Simon Glass <sjg at chromium.org>
---

(no changes since v1)

 tools/concurrencytest/.gitignore         |   1 -
 tools/concurrencytest/README.md          |  74 ------------
 tools/concurrencytest/__init__.py        |   0
 tools/concurrencytest/concurrencytest.py | 144 -----------------------
 tools/patman/test_util.py                |   4 +-
 5 files changed, 2 insertions(+), 221 deletions(-)
 delete mode 100644 tools/concurrencytest/.gitignore
 delete mode 100644 tools/concurrencytest/README.md
 delete mode 100644 tools/concurrencytest/__init__.py
 delete mode 100644 tools/concurrencytest/concurrencytest.py

Applied to u-boot-dm/next, thanks!