Remove generated directories with 100s of files.

client/html/generated/html/dartium/BlobBuilder.dart

Index: client/html/generated/html/dartium/BlobBuilder.dart
diff --git a/client/html/generated/html/dartium/BlobBuilder.dart b/client/html/generated/html/dartium/BlobBuilder.dart
deleted file mode 100644
index e6bd4d44e6dea2e6273b17d7096e3e6404a0566e..0000000000000000000000000000000000000000
--- a/client/html/generated/html/dartium/BlobBuilder.dart
+++ /dev/null
@@ -1,39 +0,0 @@
-
-class _BlobBuilderImpl extends _DOMTypeBase implements BlobBuilder {
-  _BlobBuilderImpl._wrap(ptr) : super._wrap(ptr);
-
-  void append(var arrayBuffer_OR_blob_OR_value, [String endings = null]) {
-    if (arrayBuffer_OR_blob_OR_value is Blob) {
-      if (endings === null) {
-        _ptr.append(_unwrap(arrayBuffer_OR_blob_OR_value));
-        return;
-      }
-    } else {
-      if (arrayBuffer_OR_blob_OR_value is ArrayBuffer) {
-        if (endings === null) {
-          _ptr.append(_unwrap(arrayBuffer_OR_blob_OR_value));
-          return;
-        }
-      } else {
-        if (arrayBuffer_OR_blob_OR_value is String) {
-          if (endings === null) {
-            _ptr.append(_unwrap(arrayBuffer_OR_blob_OR_value));
-            return;
-          } else {
-            _ptr.append(_unwrap(arrayBuffer_OR_blob_OR_value), _unwrap(endings));
-            return;
-          }
-        }
-      }
-    }
-    throw "Incorrect number or type of arguments";
-  }
-
-  Blob getBlob([String contentType = null]) {
-    if (contentType === null) {
-      return _wrap(_ptr.getBlob());
-    } else {
-      return _wrap(_ptr.getBlob(_unwrap(contentType)));
-    }
-  }
-}