Cleanup: use a shared apex_key

Bug: 296524155
Test: m
Change-Id: Ied927694715aa2a971702d4dd358288db2546553
diff --git a/authsecret/aidl/default/Android.bp b/authsecret/aidl/default/Android.bp
index 7e6e48b..91f4fae 100644
--- a/authsecret/aidl/default/Android.bp
+++ b/authsecret/aidl/default/Android.bp
@@ -55,23 +55,12 @@
     installable: false,
 }
 
-apex_key {
-    name: "com.android.hardware.authsecret.key",
-    public_key: "com.android.hardware.authsecret.avbpubkey",
-    private_key: "com.android.hardware.authsecret.pem",
-}
-
-android_app_certificate {
-    name: "com.android.hardware.authsecret.certificate",
-    certificate: "com.android.hardware.authsecret",
-}
-
 apex {
     name: "com.android.hardware.authsecret",
     manifest: "manifest.json",
     file_contexts: "file_contexts",
-    key: "com.android.hardware.authsecret.key",
-    certificate: ":com.android.hardware.authsecret.certificate",
+    key: "com.android.hardware.key",
+    certificate: ":com.android.hardware.certificate",
     updatable: false,
     vendor: true,