Remove TODO. Done with env CAMLI_DISABLE_THUMB_CACHE now.

Change-Id: I84835c565eda7bcb0562a4748357c9e05188eca3
pkg/server: Run synchronous blob hooks first in blobhub.

Change-Id: I4cc04b10d97bb9aefea4f0e2ae61117b8ef15c17
TODO: remove some items

Change-Id: I1a57ea29222a0bf86beeff5d6b130fab753d52ee