Revert "mako: create ext4 for sensor calibration data"

We will use persist partition for sensor calibration data.
sns partition will be removed.

This reverts commit d64b84658ed100cfec383c13993ccb54c72325d9.

Conflicts:

	init.mako.rc

Change-Id: I05da3eee033b73d929cf8863b4a34b6113590d91
1 file changed