Remove unnecessary deps in material_components_ios.

ios/third_party/material_components_ios/BUILD.gn

Index: ios/third_party/material_components_ios/BUILD.gn
diff --git a/ios/third_party/material_components_ios/BUILD.gn b/ios/third_party/material_components_ios/BUILD.gn
index 3359c1df8c254717f7db80604d06e187dd1c895d..9900301f883173a35410e4fa99d76e5591c53ca9 100644
--- a/ios/third_party/material_components_ios/BUILD.gn
+++ b/ios/third_party/material_components_ios/BUILD.gn
@@ -268,10 +268,6 @@ source_set("material_components_ios") {
   deps = [
     ":material_collections_bundle",
     ":material_component_ic_arrow_back_bundle",
-
-    # TODO(crbug.com/673904): remove when the migration to MDFRobotoFontLoader
-    # is complete.
-    "//ios/third_party/material_roboto_font_loader_ios",
     "//ios/third_party/material_text_accessibility_ios",
   ]