Revert of WebUI: Vulcanize MD Settings at compile time.

chrome/browser/resources/BUILD.gn

Index: chrome/browser/resources/BUILD.gn
diff --git a/chrome/browser/resources/BUILD.gn b/chrome/browser/resources/BUILD.gn
index e6a122a354ab421204002b7a747e27cea0679a3a..c8edb250ebac5dc12eb76b18b214a977d52139fe 100644
--- a/chrome/browser/resources/BUILD.gn
+++ b/chrome/browser/resources/BUILD.gn
@@ -94,18 +94,7 @@
   }
 
   grit("settings_resources") {
-    if (use_vulcanize) {
-      source = "settings/settings_resources_vulcanized.grd"
-      deps = [
-        "//chrome/browser/resources/settings:vulcanize",
-      ]
-      grit_flags = [
-        "-E",
-        "root_gen_dir=" + rebase_path(root_gen_dir, root_build_dir),
-      ]
-    } else {
-      source = "settings/settings_resources.grd"
-    }
+    source = "settings/settings_resources.grd"
 
     # TODO(thestig): use_qualified_include = true
     defines = chrome_grit_defines