Clean up tests folder

- remove __init__.py as recommended in pytest docs[1]
- rename cli test files for a consistent naming style
- remove empty test files

[1]: http://docs.pytest.org/en/latest/goodpractices.html#choosing-a-test-layout-import-rules

Change-Id: Idfb5d8a8fb7a590ef988a761991b8e313089e9bc
Signed-off-by: Yujun Zhang <zhang.yujunz@zte.com.cn>

1 files changed, 0 insertions, 0 deletions

diff --git a/tests/unit/collector/transformer/__init__.py b/tests/unit/collector/transformer/__init__.py
deleted file mode 100644
index e69de29b..00000000
--- a/tests/unit/collector/transformer/__init__.py
+++ /dev/null