diff --git a/dom/public/idl/html/HTMLBlockquoteElement.idl b/dom/public/idl/html/HTMLBlockquoteElement.idl
deleted file mode 100644
index 6dc1e58d5ada..000000000000
--- a/dom/public/idl/html/HTMLBlockquoteElement.idl
+++ /dev/null
@@ -1,8 +0,0 @@
-
- interface HTMLBlockquoteElement : HTMLElement {
- /* IID: { 0xa6cf909f, 0x15b3, 0x11d2, \
-  { 0x93, 0x2e, 0x00, 0x80, 0x5f, 0x8a, 0xdd, 0x32 } } */
-
-            attribute  DOMString            cite;
- };
-