Remove generated directories with 100s of files.

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

Index: client/dom/generated/src/frog/XMLHttpRequest.dart
diff --git a/client/dom/generated/src/frog/XMLHttpRequest.dart b/client/dom/generated/src/frog/XMLHttpRequest.dart
deleted file mode 100644
index f2c620feb2bc8e8135b5672c591426f621cc7965..0000000000000000000000000000000000000000
--- a/client/dom/generated/src/frog/XMLHttpRequest.dart
+++ /dev/null
@@ -1,55 +0,0 @@
-
-class _XMLHttpRequestJs extends _EventTargetJs implements XMLHttpRequest native "*XMLHttpRequest" {
-
-  static final int DONE = 4;
-
-  static final int HEADERS_RECEIVED = 2;
-
-  static final int LOADING = 3;
-
-  static final int OPENED = 1;
-
-  static final int UNSENT = 0;
-
-  bool asBlob;
-
-  final int readyState;
-
-  final Object response;
-
-  final _BlobJs responseBlob;
-
-  final String responseText;
-
-  String responseType;
-
-  final _DocumentJs responseXML;
-
-  final int status;
-
-  final String statusText;
-
-  final _XMLHttpRequestUploadJs upload;
-
-  bool withCredentials;
-
-  void abort() native;
-
-  void addEventListener(String type, EventListener listener, [bool useCapture = null]) native;
-
-  bool dispatchEvent(_EventJs evt) native;
-
-  String getAllResponseHeaders() native;
-
-  String getResponseHeader(String header) native;
-
-  void open(String method, String url, [bool async = null, String user = null, String password = null]) native;
-
-  void overrideMimeType(String override) native;
-
-  void removeEventListener(String type, EventListener listener, [bool useCapture = null]) native;
-
-  void send([var data = null]) native;
-
-  void setRequestHeader(String header, String value) native;
-}