add gocritic/ruleguard checks back again, cleanup code. (#13665)

- remove some duplicated code
- reported a bug, separately fixed in #13664
- using strings.ReplaceAll() when needed
- using filepath.ToSlash() use when needed
- remove all non-Go style comments from the codebase

Co-authored-by: Aditya Manthramurthy <donatello@users.noreply.github.com>

internal/s3select/json/record.go

@@ -103,7 +103,7 @@ func (r *Record) Set(name string, value *sql.Value) (sql.Record, error) {
 		return nil, fmt.Errorf("unsupported sql value %v and type %v", value, value.GetTypeString())
 	}
 
-	name = strings.Replace(name, "*", "__ALL__", -1)
+	name = strings.ReplaceAll(name, "*", "__ALL__")
 	r.KVS = append(r.KVS, jstream.KV{Key: name, Value: v})
 	return r, nil
 }