Revert "Add type parameters in OutboundConnectionQueueTest"

This reverts commit ccd4950689924115657ed5a764866dc63c615470.
Revert "Remove unused import from OutboundEnvelopeEncoderTest"

This reverts commit 32d168f439bdb5dfab02a3ab2d12e87d0622a67e.
deleted erronous test