Remove unused exception constructors

src/main/java/com/fazecast/jSerialComm/SerialPort.java

@@ -1328,7 +1328,7 @@ public final synchronized boolean setParity(int newParity)
 	 * @param delayAfterSendMicroseconds The time to wait after sending the last data bit before disabling transmit mode (effective only on Linux).
 	 * @return Whether the port configuration is valid or disallowed on this system (only meaningful after the port is already opened).
 	 */
-	public final synchronized boolean setRs485ModeParameters(boolean useRS485Mode, boolean rs485RtsActiveHigh, int delayBeforeSendMicroseconds, int delayAfterSendMicroseconds)
+	public final boolean setRs485ModeParameters(boolean useRS485Mode, boolean rs485RtsActiveHigh, int delayBeforeSendMicroseconds, int delayAfterSendMicroseconds)
 	{
 		return setRs485ModeParameters(useRS485Mode, rs485RtsActiveHigh, false, false, delayBeforeSendMicroseconds, delayAfterSendMicroseconds);
 	}

src/main/java/com/fazecast/jSerialComm/SerialPortIOException.java

@@ -36,14 +36,6 @@ public final class SerialPortIOException extends IOException
 {
 	private static final long serialVersionUID = 3353684802475494674L;
 
-	/**
-	 * Constructs a {@link SerialPortIOException} with {@code null} as its error detail message.
-	 */
-	public SerialPortIOException()
-	{
-		super();
-	}
-
 	/**
 	 * Constructs a {@link SerialPortIOException} with the specified detail message.
 	 * 
@@ -53,29 +45,4 @@ public SerialPortIOException(String message)
 	{
 		super(message);
 	}
-
-	/**
-	 * Constructs a {@link SerialPortIOException} with the specified detail message and cause.
-	 * <p>
-	 * Note that the detail message associated with {@link cause} is <i>not</i> automatically incorporated into this exception's detail message.
-	 * 
-	 * @param message message The detail message (which is saved for later retrieval by the {@link getMessage()} method).
-	 * @param cause The cause (which is saved for later retrieval by the {@link getCause()} method). (A null value is permitted, and indicates that the cause is nonexistent or unknown.)
-	 */
-	public SerialPortIOException(String message, Throwable cause)
-	{
-		super(message, cause);
-	}
-
-	/**
-	 * Constructs a {@link SerialPortIOException} with the specified cause and a detail message of {@code (cause==null ? null : cause.toString()) }
-	 * (which typically contains the class and detail message of {@code cause}). This constructor is useful for IO exceptions that are little more
-	 * than wrappers for other throwables.
-	 * 
-	 * @param cause The cause (which is saved for later retrieval by the {@link getCause()} method). (A null value is permitted, and indicates that the cause is nonexistent or unknown.)
-	 */
-	public SerialPortIOException(Throwable cause)
-	{
-		super(cause);
-	}
 }

src/main/java/com/fazecast/jSerialComm/SerialPortInvalidPortException.java

@@ -34,24 +34,6 @@ public final class SerialPortInvalidPortException extends RuntimeException
 {
 	private static final long serialVersionUID = 3420177672598538224L;
 
-	/**
-	 * Constructs a {@link SerialPortInvalidPortException} with {@code null} as its error detail message.
-	 */
-	public SerialPortInvalidPortException()
-	{
-		super();
-	}
-
-	/**
-	 * Constructs a {@link SerialPortInvalidPortException} with the specified detail message.
-	 *
-	 * @param message The detail message (which is saved for later retrieval by the {@link getMessage()} method).
-	 */
-	public SerialPortInvalidPortException(String message)
-	{
-		super(message);
-	}
-
 	/**
 	 * Constructs a {@link SerialPortInvalidPortException} with the specified detail message and cause.
 	 * <p>
@@ -64,16 +46,4 @@ public SerialPortInvalidPortException(String message, Throwable cause)
 	{
 		super(message, cause);
 	}
-
-	/**
-	 * Constructs a {@link SerialPortInvalidPortException} with the specified cause and a detail message of {@code (cause==null ? null : cause.toString()) }
-	 * (which typically contains the class and detail message of {@code cause}). This constructor is useful for exceptions that are little more
-	 * than wrappers for other throwables.
-	 *
-	 * @param cause The cause (which is saved for later retrieval by the {@link getCause()} method). (A null value is permitted, and indicates that the cause is nonexistent or unknown.)
-	 */
-	public SerialPortInvalidPortException(Throwable cause)
-	{
-		super(cause);
-	}
 }

src/main/java/com/fazecast/jSerialComm/SerialPortTimeoutException.java

@@ -36,15 +36,6 @@ public final class SerialPortTimeoutException extends InterruptedIOException
 {
 	private static final long serialVersionUID = 3209035213903386044L;
 
-	/**
-	 * Constructs a {@link SerialPortTimeoutException} with {@code null} as its error detail message.
-	 */
-	public SerialPortTimeoutException()
-	{
-		super();
-		bytesTransferred = 0;
-	}
-
 	/**
 	 * Constructs a {@link SerialPortTimeoutException} with the specified detail message.
 	 *