Use filegroup defaults for framework sources

There's now a shared defaults module for this kind of filegroup. Use
that and remove the previously duplicated prop.

Bug: 271816210
Test: m
Change-Id: Ia4547984a73179fdfc98c427482dd10246f9722c
diff --git a/Tethering/common/TetheringLib/Android.bp b/Tethering/common/TetheringLib/Android.bp
index 4080029..4f95bdd 100644
--- a/Tethering/common/TetheringLib/Android.bp
+++ b/Tethering/common/TetheringLib/Android.bp
@@ -127,7 +127,7 @@
     out: ["framework_tethering_jarjar_rules.txt"],
     cmd: "$(location jarjar-rules-generator) " +
         "$(location :framework-tethering-pre-jarjar{.jar}) " +
-        "--apistubs $(location :framework-tethering.stubs.module_lib{.jar}) " + 
+        "--apistubs $(location :framework-tethering.stubs.module_lib{.jar}) " +
         "--prefix android.net.http.internal " +
         "--excludes $(location jarjar-excludes.txt) " +
         "--output $(out)",
@@ -151,6 +151,7 @@
 
 filegroup {
     name: "framework-tethering-srcs",
+    defaults: ["framework-sources-module-defaults"],
     srcs: [
         "src/**/*.aidl",
         "src/**/*.java",