Make hidl.manager optional in default device matrix am: 32121aecfd am: 360773b366 am: eb8aa6de26

Original change: https://android-review.googlesource.com/c/platform/system/libhidl/+/2243537

Change-Id: I90ad1022c474f75305d2ccbf42c552a8953bf432
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/Android.bp b/Android.bp
index 670ee39..b694886 100644
--- a/Android.bp
+++ b/Android.bp
@@ -112,9 +112,6 @@
     ],
     min_sdk_version: "29",
     afdo: true,
-    header_abi_checker: {
-        diff_flags: ["-allow-adding-removing-weak-symbols"],
-    },
 }
 
 // WARNING: deprecated