Don't rate limit DCCs to 10k/s, as this is 2010.

Change-Id: Ifedf37d301dbc4d34de370e3803b66310094bf3a
Reviewed-on: http://gerrit.dmdirc.com/747
Automatic-Compile: Gregory Holmes <greg@dmdirc.com>
Reviewed-by: Gregory Holmes <greg@dmdirc.com>

src/com/dmdirc/addons/dcc/DCC.java

@@ -195,12 +195,8 @@ public abstract class DCC implements Runnable {
                 }
             }
 
-            // Sleep for a short period of time to reduce CPU usage.
-            try {
-                Thread.yield();
-                Thread.sleep(100);
-            } catch (InterruptedException ie) {
-            }
+            // Yield to reduce CPU usage.
+            Thread.yield();
         }
         // Socket closed