remove framework_base_subdirs

Metalava no longer requires it at least for droidstubs in this
directory. Even when local_sourcepath is not set, the -sourcepath option
is set to the module directory (frameworks/base in this case), and
metalava tries to find package.html files under the directory to know if
a package is hidden or not.

Bug: 144264106
Test: m

Change-Id: Idfa2aa392ae1da9582e7691a8c06c986baad5088

Android.bp

@@ -870,28 +870,6 @@ python_binary_host {
     ],
 }
 
-// TODO: Don't rely on this list by switching package.html into package-info.java
-frameworks_base_subdirs = [
-    "core/java",
-    "graphics/java",
-    "location/java",
-    "media/java",
-    "media/mca/effect/java",
-    "media/mca/filterfw/java",
-    "media/mca/filterpacks/java",
-    "drm/java",
-    "mms/java",
-    "opengl/java",
-    "sax/java",
-    "telecomm/java",
-    "telephony/common",
-    "telephony/java",
-    "wifi/java",
-    "lowpan/java",
-    "keystore/java",
-    "rs/java",
-]
-
 // Make the api/current.txt file available for use by modules in other
 // directories.
 filegroup {
@@ -1011,7 +989,6 @@ stubs_defaults {
         "test-runner/src/**/*.java",
     ],
     libs: framework_docs_only_libs,
-    local_sourcepaths: frameworks_base_subdirs,
     create_doc_stubs: true,
     annotations_enabled: true,
     api_levels_annotations_enabled: true,
@@ -1072,7 +1049,6 @@ stubs_defaults {
         ":updatable-media-srcs",
     ],
     libs: ["framework-internal-utils"],
-    local_sourcepaths: frameworks_base_subdirs,
     installable: false,
     annotations_enabled: true,
     previous_api: ":last-released-public-api-for-metalava-annotations",

core/java/com/android/internal/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * @hide
+ */
+package com.android.internal;