Remove generated directories with 100s of files.

client/html/generated/html/frog/IDBTransaction.dart

Index: client/html/generated/html/frog/IDBTransaction.dart
diff --git a/client/html/generated/html/frog/IDBTransaction.dart b/client/html/generated/html/frog/IDBTransaction.dart
deleted file mode 100644
index b38205f75496c05b0581b8457bc96a15d961a275..0000000000000000000000000000000000000000
--- a/client/html/generated/html/frog/IDBTransaction.dart
+++ /dev/null
@@ -1,29 +0,0 @@
-
-class _IDBTransactionImpl implements IDBTransaction native "*IDBTransaction" {
-
-  static final int READ_ONLY = 0;
-
-  static final int READ_WRITE = 1;
-
-  static final int VERSION_CHANGE = 2;
-
-  final _IDBDatabaseImpl db;
-
-  final int mode;
-
-  EventListener onabort;
-
-  EventListener oncomplete;
-
-  EventListener onerror;
-
-  void abort() native;
-
-  void addEventListener(String type, EventListener listener, [bool useCapture = null]) native;
-
-  bool dispatchEvent(_EventImpl evt) native;
-
-  _IDBObjectStoreImpl objectStore(String name) native;
-
-  void removeEventListener(String type, EventListener listener, [bool useCapture = null]) native;
-}