Remove deprecated constructor for Log

The following constructor in javac Log is no longer required and can be removed, after updating the one use case in javadoc.


    /**
     * Construct a log with given I/O redirections.
     * @deprecated
     * This constructor is provided to support the supported but now-deprecated javadoc entry point
     * com.sun.tools.javadoc.Main.execute(String programName,
     * PrintWriter errWriter, PrintWriter warnWriter, PrintWriter noticeWriter,
     * String defaultDocletClassName, String... args)
     */
    @Deprecated
    protected Log(Context context, PrintWriter errWriter, PrintWriter warnWriter, PrintWriter noticeWriter) {
        this(context, initWriters(errWriter, warnWriter, noticeWriter));
    }