Remove unused code and link to deprecated code

Eclipse reports these as errors, so remove them.

Change-Id: Ic53d8003f9faef38fe776af5a73794e7bb1dfc49
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>

org.eclipse.jgit.test/tst/org/eclipse/jgit/transport/UploadPackTest.java

@@ -334,22 +334,6 @@ public class UploadPackTest {
 		}
 	}
 
-	private static ByteArrayInputStream send(String... lines) throws Exception {
-		ByteArrayOutputStream os = new ByteArrayOutputStream();
-		PacketLineOut pckOut = new PacketLineOut(os);
-		for (String line : lines) {
-			if (line == PacketLineIn.END) {
-				pckOut.end();
-			} else if (line == PacketLineIn.DELIM) {
-				pckOut.writeDelim();
-			} else {
-				pckOut.writeString(line);
-			}
-		}
-		byte[] a = os.toByteArray();
-		return new ByteArrayInputStream(a);
-	}
-
 	/*
 	 * Invokes UploadPack with protocol v2 and sends it the given lines.
 	 * Returns UploadPack's output stream, not including the capability
@@ -534,9 +518,6 @@ public class UploadPackTest {
 	 * into the client repository.
 	 */
 	private void parsePack(ByteArrayInputStream recvStream) throws Exception {
-		SideBandInputStream sb = new SideBandInputStream(
-				recvStream, NullProgressMonitor.INSTANCE,
-				new StringWriter(), NullOutputStream.INSTANCE);
 		parsePack(recvStream, NullProgressMonitor.INSTANCE);
 	}
 
@@ -826,7 +807,7 @@ public class UploadPackTest {
 	private static class RejectAllRefFilter implements RefFilter {
 		@Override
 		public Map<String, Ref> filter(Map<String, Ref> refs) {
-			return new HashMap<String, Ref>();
+			return new HashMap<>();
 		}
 	};
 }

org.eclipse.jgit/src/org/eclipse/jgit/api/NameRevCommand.java

@@ -251,8 +251,7 @@ public class NameRevCommand extends GitCommand<Map<ObjectId, String>> {
 	 * prefix added by {@link #addPrefix(String)}.
 	 *
 	 * @param prefix
-	 *            prefix to add; see
+	 *            prefix to add; the prefix must end with a slash
-	 *            {@link org.eclipse.jgit.lib.RefDatabase#getRefs(String)}
 	 * @return {@code this}
 	 */
 	public NameRevCommand addPrefix(String prefix) {