fix(store/s3api): remove vestigal experiment

Signed-off-by: Xe Iaso <me@xeiaso.net>

lib/store/s3api/s3api.go

@@ -6,11 +6,10 @@ import (
 	"fmt"
 	"io"
 	"strconv"
-	"time"
 	"strings"
+	"time"
 
 	"github.com/TecharoHQ/anubis/lib/store"
-	"github.com/aws/aws-sdk-go-v2/aws"
 	"github.com/aws/aws-sdk-go-v2/service/s3"
 )
 
@@ -19,21 +18,6 @@ type Store struct {
 	bucket string
 }
 
-// staticProvider is a minimal aws.CredentialsProvider implementation to avoid
-// pulling a separate credentials module.
-type staticProvider struct {
-	akid   string
-	secret string
-}
-
-func (p staticProvider) Retrieve(ctx context.Context) (aws.Credentials, error) {
-	return aws.Credentials{
-		AccessKeyID:     p.akid,
-		SecretAccessKey: p.secret,
-		Source:          "static",
-	}, nil
-}
-
 func (s *Store) Delete(ctx context.Context, key string) error {
 	normKey := strings.ReplaceAll(key, ":", "/")
 	// Emulate not found by probing first.