configstore: remove configstore 1.1

Configstore was down-revisioned from 1.1 to 1.0 in oc-dr1-dev,
oc-mr1-dev and oc-mr1-dev-plus-aosp. Therefore configstore in
oc-dr1-dev-plus-aosp will also be down-revisioned to 1.0.

Bug: 65124635
Test: build & boot test on sailfish + walleye
Change-Id: Ife60328110c6d6cb3e8024fb4a5caabc4c7c034f
Merged-In: I90d30584ad4499d4e20254be2974d9de1d3883c0