Revert delete-rework branch

Revert "Log state names not numbers"

This reverts commit 1c7c954aab8022e786b74beb4013c6d402fddedb.

Revert "Also log provider name when debugging deletes."

This reverts commit 3c32477bc73839b946403adf0750f2e9b09ba855.

Revert "Run per-provider cleanup threads."

This reverts commit 3f2100cf6fab5c51e22f806060440182c24c50eb.

Revert "Decouple cron names from config file names."

This reverts commit 9505671e66a976e9b0ee8d13a9fb677a0409f39a.

Revert "Move cron definition out of the inner loop."

This reverts commit f91940bf31b9cf4c187980a76d49bd9955e2c53e.

Revert "Move cron loading below provider loading."

This reverts commit 84061a038c9f1684ba654d81ce675b0eb3b70957.

Revert "Teach periodicCleanup how to do one provider."

This reverts commit e856646bd7df2acf2883ba181b0d685b87249f37.

Revert "Use the nonblocking cleanupServer."

This reverts commit c2f854c99f9a983bcd6f1390f6c20838cf67d525.

Revert "Split out the logic for deleting a nodedb node."

This reverts commit 5a696ca99231bf72827503b06f08f0c3e91e8ae1.

Revert "Make cleanupServer optionally nonblocking."

This reverts commit 423bed124e90bc7773017a7884cc23c428f58265.

Revert "Consolidate duplicate logging messages."

This reverts commit b8a8736ac54dac25d89fd9e0f01eb64d1b035b78.

Revert "Log how long nodes have been in DELETE state."

This reverts commit daf427f463706e99a90e7d29c48c19566cc710f9.

Revert "Cleanup nodes in state DELETE immediately."

This reverts commit a84540f33214eb31228e964bb193402903568754.

Change-Id: Iaf1eae8724f0a9fe1c14e70896fa699629624d28