Remove generated directories with 100s of files.

client/html/generated/html/dartium/Coordinates.dart

Index: client/html/generated/html/dartium/Coordinates.dart
diff --git a/client/html/generated/html/dartium/Coordinates.dart b/client/html/generated/html/dartium/Coordinates.dart
deleted file mode 100644
index e1126736c2038458e74551af765543c7f658d436..0000000000000000000000000000000000000000
--- a/client/html/generated/html/dartium/Coordinates.dart
+++ /dev/null
@@ -1,18 +0,0 @@
-
-class _CoordinatesImpl extends _DOMTypeBase implements Coordinates {
-  _CoordinatesImpl._wrap(ptr) : super._wrap(ptr);
-
-  num get accuracy() => _wrap(_ptr.accuracy);
-
-  num get altitude() => _wrap(_ptr.altitude);
-
-  num get altitudeAccuracy() => _wrap(_ptr.altitudeAccuracy);
-
-  num get heading() => _wrap(_ptr.heading);
-
-  num get latitude() => _wrap(_ptr.latitude);
-
-  num get longitude() => _wrap(_ptr.longitude);
-
-  num get speed() => _wrap(_ptr.speed);
-}