Revert a merge of accelerometer branch to led branch.

Revert "Merge branch 'dev/jpsnyder/accel' of https://github.com/scottsilverlabs/raspberrystem into led2_dev"

This reverts commit bda943a93ccd5a35ad4ba7732f5aae704b29e728, reversing
changes made to 6b3524ab5571dad8e296b8b3df8ee50ecafb54a1.