Revert "logging(gitstart): migrate internal/search to use lib/log (#36457)

Created by: camdencheek

This reverts commit 3721544b9b4b7970cd1ee404b562f1da9644fd27.

See comments here

Fixes https://github.com/sourcegraph/sourcegraph/issues/38105

This disables the logging lint because it's blocking me from merging this PR.

Test plan

Backend integration tests.