Code clean up

Remove database version 1~11 support since the format hasn't changed
in the past 7 years.

Bug: 135956699
Test: Manual
Merged-In: I367124471f16073bb47a31c094d161d36969acc1
Change-Id: I367124471f16073bb47a31c094d161d36969acc1
(cherry picked from commit 21effc86)