Remove unused flags from ServerParams

These were either completely unused, or always true.
diff --git a/common/rfb/CConnection.cxx b/common/rfb/CConnection.cxx
index 6bb824d..e61c2e7 100644
--- a/common/rfb/CConnection.cxx
+++ b/common/rfb/CConnection.cxx
@@ -579,11 +579,10 @@
     encodings.push_back(pseudoEncodingDesktopSize);
   if (server.supportsExtendedDesktopSize)
     encodings.push_back(pseudoEncodingExtendedDesktopSize);
-  if (server.supportsDesktopRename)
-    encodings.push_back(pseudoEncodingDesktopName);
   if (server.supportsLEDState)
     encodings.push_back(pseudoEncodingLEDState);
 
+  encodings.push_back(pseudoEncodingDesktopName);
   encodings.push_back(pseudoEncodingLastRect);
   encodings.push_back(pseudoEncodingContinuousUpdates);
   encodings.push_back(pseudoEncodingFence);