plugins: use uniform initialization syntax

Signed-off-by: Rafał Malinowski <rafal.przemyslaw.malinowski@gmail.com>
tests: removed dummy tests

Signed-off-by: Rafał Malinowski <rafal.przemyslaw.malinowski@gmail.com>
plugins: typo fixed

Signed-off-by: Rafał Malinowski <rafal.przemyslaw.malinowski@gmail.com>
plugins: remove plugins that in cycle of dependency

Signed-off-by: Rafał Malinowski <rafal.przemyslaw.malinowski@gmail.com>