Revert "database: Route all encryption/decryption calls through standard helper functions"
Created by: michaellzc
Reverts sourcegraph/sourcegraph#40050
https://sourcegraph.slack.com/archives/C07KZF47K/p1659970974264169
Test plan
it broke KMS
Created by: michaellzc
Reverts sourcegraph/sourcegraph#40050
https://sourcegraph.slack.com/archives/C07KZF47K/p1659970974264169
it broke KMS
revert-40050-ef/38050-database
does not exist.
Please restore it or use a different source branch.
Created by: eseliger
Review: Approved
Cc @efritz
Created by: mucles
Review: Approved