chore: Inline code into `migration/.../runner.go` (!30250) · Merge requests · Administrator / sourcegraph

Administrator requested to merge ef/inline-runner-visitor into main Jan 26, 2022

Created by: efritz

Pulled from #29831. Inlines internal/database/migration/runner/visitor.go into internal/database/migration/runner/runner.go.

chore: Inline code into `migration/.../runner.go`