Remove HTMLLinkElement

sky/engine/core/core.gni

Index: sky/engine/core/core.gni
diff --git a/sky/engine/core/core.gni b/sky/engine/core/core.gni
index afffcf52c161e06c3813efa8016effe83d861548..2531a7b15ac501ef609b833b619237a8dcaf0339 100644
--- a/sky/engine/core/core.gni
+++ b/sky/engine/core/core.gni
@@ -760,8 +760,6 @@ sky_core_files = [
   "html/HTMLImageLoader.h",
   "html/HTMLImportElement.cpp",
   "html/HTMLImportElement.h",
-  "html/HTMLLinkElement.cpp",
-  "html/HTMLLinkElement.h",
   "html/HTMLMediaElement.cpp",
   "html/HTMLMediaSource.cpp",
   "html/HTMLMediaSource.h",
@@ -783,10 +781,6 @@ sky_core_files = [
   "html/HTMLVideoElement.h",
   "html/ImageData.cpp",
   "html/ImageData.h",
-  "html/LinkRelAttribute.cpp",
-  "html/LinkRelAttribute.h",
-  "html/LinkResource.cpp",
-  "html/LinkResource.h",
   "html/MediaError.h",
   "html/MediaFragmentURIParser.cpp",
   "html/MediaFragmentURIParser.h",
@@ -922,8 +916,6 @@ sky_core_files = [
   "html/imports/HTMLImportTreeRoot.h",
   "html/imports/HTMLImportsController.cpp",
   "html/imports/HTMLImportsController.h",
-  "html/imports/LinkImport.cpp",
-  "html/imports/LinkImport.h",
   "html/parser/AtomicHTMLToken.h",
   "html/parser/BackgroundHTMLParser.cpp",
   "html/parser/BackgroundHTMLParser.h",
@@ -1271,7 +1263,6 @@ core_idl_files = get_path_info([
   "html/HTMLElement.idl",
   "html/HTMLImageElement.idl",
   "html/HTMLImportElement.idl",
-  "html/HTMLLinkElement.idl",
   "html/HTMLMediaElement.idl",
   "html/HTMLMetaElement.idl",
   "html/HTMLPictureElement.idl",