Remove generated directories with 100s of files.

client/dom/generated/src/frog/WebSocket.dart

Index: client/dom/generated/src/frog/WebSocket.dart
diff --git a/client/dom/generated/src/frog/WebSocket.dart b/client/dom/generated/src/frog/WebSocket.dart
deleted file mode 100644
index f61be5f14ada48c70bb852455c01622ca6ae9e21..0000000000000000000000000000000000000000
--- a/client/dom/generated/src/frog/WebSocket.dart
+++ /dev/null
@@ -1,35 +0,0 @@
-
-class _WebSocketJs extends _EventTargetJs implements WebSocket native "*WebSocket" {
-
-  static final int CLOSED = 3;
-
-  static final int CLOSING = 2;
-
-  static final int CONNECTING = 0;
-
-  static final int OPEN = 1;
-
-  final String URL;
-
-  String binaryType;
-
-  final int bufferedAmount;
-
-  final String extensions;
-
-  final String protocol;
-
-  final int readyState;
-
-  final String url;
-
-  void addEventListener(String type, EventListener listener, [bool useCapture = null]) native;
-
-  void close([int code = null, String reason = null]) native;
-
-  bool dispatchEvent(_EventJs evt) native;
-
-  void removeEventListener(String type, EventListener listener, [bool useCapture = null]) native;
-
-  bool send(String data) native;
-}