cleanup object-lock/bucket tagging for gateways (#9548)

This PR is to ensure that we call the relevant object
layer APIs for necessary S3 API level functionalities
allowing gateway implementations to return proper
errors as NotImplemented{}

This allows for all our tests in mint to behave
appropriately and can be handled appropriately as
well.

pkg/bucket/object/lock/lock.go

@@ -24,7 +24,6 @@ import (
 	"io"
 	"net/http"
 	"strings"
-	"sync"
 	"time"
 
 	"github.com/beevik/ntp"
@@ -158,41 +157,6 @@ func (r Retention) Retain(created time.Time) bool {
 	return created.Add(r.Validity).After(t)
 }
 
-// BucketObjectLockConfig - map of bucket and retention configuration.
-type BucketObjectLockConfig struct {
-	sync.RWMutex
-	retentionMap map[string]*Retention
-}
-
-// Set - set retention configuration.
-func (config *BucketObjectLockConfig) Set(bucketName string, retention *Retention) {
-	config.Lock()
-	config.retentionMap[bucketName] = retention
-	config.Unlock()
-}
-
-// Get - Get retention configuration.
-func (config *BucketObjectLockConfig) Get(bucketName string) (r *Retention, ok bool) {
-	config.RLock()
-	defer config.RUnlock()
-	r, ok = config.retentionMap[bucketName]
-	return r, ok
-}
-
-// Remove - removes retention configuration.
-func (config *BucketObjectLockConfig) Remove(bucketName string) {
-	config.Lock()
-	delete(config.retentionMap, bucketName)
-	config.Unlock()
-}
-
-// NewBucketObjectLockConfig returns initialized BucketObjectLockConfig
-func NewBucketObjectLockConfig() *BucketObjectLockConfig {
-	return &BucketObjectLockConfig{
-		retentionMap: make(map[string]*Retention),
-	}
-}
-
 // DefaultRetention - default retention configuration.
 type DefaultRetention struct {
 	XMLName xml.Name `xml:"DefaultRetention"`