Revert "Fix typo [skip ci]"

This reverts commit b2f98607424b9b07509898a724b3c4db1ca61556.
Revert "Enable auto_delete & internal for exchange.declare (requires rabbitmq-c >= 0.5.3)"

This reverts commit 4fe07eeb6749f537baa1f0f7949e644b3be3c534.