Remove generated directories with 100s of files.

client/html/generated/html/frog/IDBIndex.dart

Index: client/html/generated/html/frog/IDBIndex.dart
diff --git a/client/html/generated/html/frog/IDBIndex.dart b/client/html/generated/html/frog/IDBIndex.dart
deleted file mode 100644
index b8d7e38627d88931828724ee4b2f3eaee3479263..0000000000000000000000000000000000000000
--- a/client/html/generated/html/frog/IDBIndex.dart
+++ /dev/null
@@ -1,23 +0,0 @@
-
-class _IDBIndexImpl implements IDBIndex native "*IDBIndex" {
-
-  final String keyPath;
-
-  final bool multiEntry;
-
-  final String name;
-
-  final _IDBObjectStoreImpl objectStore;
-
-  final bool unique;
-
-  _IDBRequestImpl count([var key_OR_range = null]) native;
-
-  _IDBRequestImpl getObject(_IDBKeyImpl key) native;
-
-  _IDBRequestImpl getKey(_IDBKeyImpl key) native;
-
-  _IDBRequestImpl openCursor([_IDBKeyRangeImpl range = null, int direction = null]) native;
-
-  _IDBRequestImpl openKeyCursor([_IDBKeyRangeImpl range = null, int direction = null]) native;
-}