chore: Delete dead code at ruler storage (#6735)

* Delete dead code at ruler storage

Signed-off-by: SungJin1212 <[email protected]>

* Enable unused linter

Signed-off-by: SungJin1212 <[email protected]>

---------

Signed-off-by: SungJin1212 <[email protected]>

Author: SungJin1212

.golangci.yml

@@ -9,6 +9,7 @@ linters:
     - misspell
     - depguard
     - sloglint
+    - unused
 
 linters-settings:
   staticcheck:

pkg/ruler/storage.go

@@ -36,10 +36,5 @@ func NewRuleStore(ctx context.Context, cfg rulestore.Config, cfgProvider bucket.
 		return nil, err
 	}
 
-	store := bucketclient.NewBucketRuleStore(bucketClient, cfgProvider, logger)
-	if err != nil {
-		return nil, err
-	}
-
-	return store, nil
+	return bucketclient.NewBucketRuleStore(bucketClient, cfgProvider, logger), nil
 }