[#1388] lens: Add nolint annotations

Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>

cmd/frostfs-lens/internal/schema/common/raw.go

@@ -7,6 +7,8 @@ import (
 )
 
 type RawEntry struct {
+	// key and value used for record dump.
+	// nolint:unused
 	key, value []byte
 }
 

cmd/frostfs-lens/internal/schema/writecache/types.go

@@ -16,6 +16,8 @@ type (
 
 	DefaultRecord struct {
 		addr oid.Address
+		// data used for record dump.
+		// nolint:unused
 		data []byte
 	}
 )