Fix some redundent exceptions

Change-Id: I7ff972c3ca8eab51c20c36d88fbc57ab240184f0
Reviewed-on: http://gerrit.dmdirc.com/3684
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>

src/com/dmdirc/util/io/Downloader.java

      * @param url The URL to connect to
      * @param postData The POST data to pass to the URL
      * @return An URLConnection for the specified URL/data
-     * @throws java.net.MalformedURLException If the specified URL is malformed
      * @throws java.io.IOException If an I/O exception occurs while connecting
      */
     private URLConnection getConnection(final String url,
             final String postData)
-            throws MalformedURLException, IOException {
+            throws IOException {
         final URL myUrl = new URL(url);
         final URLConnection urlConn = myUrl.openConnection();
 

src/com/dmdirc/util/io/ReverseFileReader.java

      * Create a new ReverseFileReader.
      *
      * @param filename File to open.
-     * @throws FileNotFoundException If the file is not a regular file.
      * @throws SecurityException If a security manager exists and its checkRead method denies read access to the file.
      * @throws IOException If there is an error seeking to the end of the file.
      */
-    public ReverseFileReader(final String filename) throws FileNotFoundException,
-            SecurityException, IOException {
+    public ReverseFileReader(final String filename) throws SecurityException, IOException {
         file = new RandomAccessFile(filename, "r");
         reset();
     }
      * Create a new ReverseFileReader.
      *
      * @param myFile Existing file to use.
-     * @throws FileNotFoundException If the file is not a regular file.
      * @throws SecurityException If a security manager exists and its checkRead method denies read access to the file.
      * @throws IOException If there is an error seeking to the end of the file.
      */
-    public ReverseFileReader(final File myFile) throws FileNotFoundException,
-            SecurityException, IOException {
+    public ReverseFileReader(final File myFile) throws SecurityException, IOException {
         file = new RandomAccessFile(myFile, "r");
         reset();
     }
      * Get the next full line.
      *
      * @return The next full line.
-     * @throws EOFException If there is no more lines.
      * @throws IOException If an error reading or seeking occured, or if the fiel is closed.
      */
-    public String getNextLine() throws EOFException, IOException {
+    public String getNextLine() throws IOException {
         if (file == null) {
             throw new IOException("File has been closed.");
         }