Run unused against codebase (#12968)

* Remove unused methods

* Fix missed issues

config/export_test.go

@@ -21,8 +21,3 @@ func UnmarshalConfig(r io.Reader, allowEnvironmentOverrides bool) (*model.Config
 func InitializeConfigurationsTable(db *sqlx.DB) error {
 	return initializeConfigurationsTable(db)
 }
-
-// ResolveConfigFilePath exposes the internal resolveConfigFilePath to test only.
-func ResolveConfigFilePath(path string) (string, error) {
-	return resolveConfigFilePath(path)
-}