Remove ConfigurationFragmentFactory.requiredOptions().

This clears another obstacle toward removing ConfigurationFragmentFactory.

PiperOrigin-RevId: 342107364
diff --git a/src/main/java/com/google/devtools/build/lib/analysis/BUILD b/src/main/java/com/google/devtools/build/lib/analysis/BUILD
index 765c8d5..6ee5d7f 100644
--- a/src/main/java/com/google/devtools/build/lib/analysis/BUILD
+++ b/src/main/java/com/google/devtools/build/lib/analysis/BUILD
@@ -1671,9 +1671,11 @@
     srcs = ["config/Fragment.java"],
     deps = [
         ":config/build_options",
+        ":config/fragment_options",
         "//src/main/java/com/google/devtools/build/lib/concurrent",
         "//src/main/java/com/google/devtools/build/lib/events",
         "//src/main/java/net/starlark/java/eval",
+        "//third_party:guava",
         "//third_party:jsr305",
     ],
 )