Revert "Default to a ratelimit of 2/second for API calls"

This reverts commit 400284119dfe8118ba020f4795c448833a9c3977.

This can be changed in configuration.  1/second is a sane default.

Change-Id: I77db36badd8d82667cfab6974ff101607ffbad21
Revert "Provide diagnostics when task rate limiting."

This reverts commit a01956ed70132029c4770ba4e7a3aafa4d14b4d1.

This outputs a huge amount of not very useful information.

Change-Id: Ie72a207ced8bb64ae1a01c88ca396f9df633e79c
Merge "Revert "Default to a ratelimit of 2/second for API calls""
Merge "Revert "Provide diagnostics when task rate limiting.""