Clean up Settings_srcs & Settings_manifest

Bug: 286764889
Test: m Settings
Change-Id: I13510f58554cd2a53f4f1e0d63cc63623c576bf2

Android.bp

@@ -149,19 +149,3 @@ filegroup {
     name: "Settings_proguard_flags",
     srcs: ["proguard.flags"],
 }
-
-// Deprecated. The sources for Settings need to be exposed to ArcSettings, so they can run the
-// com.android.settingslib.search.IndexableProcessor over all the sources together.
-// Use "-Acom.android.settingslib.search.processor.package=" instead to generate the search data
-// separately for different modules.
-filegroup {
-    name: "Settings_srcs",
-    srcs: ["src/**/*.java", "src/**/*.kt"],
-}
-
-// Deprecated. Do not depend on this, only depend on Settings-core, and its manifest is also
-// included.
-filegroup {
-    name: "Settings_manifest",
-    srcs: ["AndroidManifest.xml"],
-}