WalletProtobufSerializer: update obsolete comment
writeWallet and readWallet must have been static methods at one time,
but they are instance methods now. Update this misleading comment.
@@ -66,7 +66,7 @@ import static com.google.common.base.Preconditions.checkNotNull;
* can have their format evolved over time: conceptually they represent data using (tag, length, value) tuples. The
* format is defined by the {@code wallet.proto} file in the bitcoinj source distribution.
* <p>
- * This class is used through its static methods. The most common operations are writeWallet and readWallet, which do
+ * The most common operations are writeWallet and readWallet, which do
* the obvious operations on Output/InputStreams. You can use a {@link ByteArrayInputStream} and equivalent
* {@link ByteArrayOutputStream} if you'd like byte arrays instead. The protocol buffer can also be manipulated
* in its object form if you'd like to modify the flattened data structure before serialization to binary.
