Remove unnecessary deps in material_components_ios.

BUG=673904
R=sdefresne@chromium.org

Review-Url: https://codereview.chromium.org/2610423002
Cr-Commit-Position: refs/heads/master@{#441916}

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",
   ]