refactor: remove unused format util (angular#31339)

Author: andrewseguin

src/material/core/tokens/BUILD.bazel

@@ -2,11 +2,6 @@ load("//tools:defaults.bzl", "sass_library")
 
 package(default_visibility = ["//visibility:public"])
 
-sass_library(
-    name = "format_tokens",
-    srcs = ["_format-tokens.scss"],
-)
-
 sass_library(
     name = "m3_utils",
     srcs = ["_m3-utils.scss"],
@@ -47,7 +42,6 @@ sass_library(
     name = "m3_tokens",
     srcs = ["_m3-tokens.scss"],
     deps = [
-        ":format_tokens",
         "//src/material/autocomplete:m3",
         "//src/material/badge:m3",
         "//src/material/bottom-sheet:m3",