Clean up old TODO

This was an issue previously, but after The Great Rewrite it seems
resolved, so we can drop it for now (until it next reappears...)

Author: pimterry

app/src/main/java/tech/httptoolkit/android/vpn/socket/SocketChannelWriter.java

@@ -96,7 +96,7 @@ private void writeTCP(Session session) {
 		} catch (NotYetConnectedException ex) {
 			Log.e(TAG,"failed to write to unconnected socket: " + ex.getMessage());
 		} catch (IOException e) {
-			Log.e(TAG,"Error writing to server: " + e.toString()); // TODO: null here?
+			Log.e(TAG,"Error writing to server: " + e.toString());
 
 			//close connection with vpn client
 			byte[] rstData = TCPPacketFactory.createRstData(