Merge "Turn on LTO for libc++.so" am: 0860713e9e am: 8be550233c am: c29582f711

Original change: https://android-review.googlesource.com/c/platform/external/libcxx/+/2623791

Change-Id: Id73d5ad9a86e18601b6c328d48abb86a94402df6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/Android.bp b/Android.bp
index c577256..148bfeb 100644
--- a/Android.bp
+++ b/Android.bp
@@ -194,10 +194,6 @@
             enabled: true,
         },
     },
-
-    header_abi_checker: {
-        diff_flags: ["-allow-adding-removing-weak-symbols"],
-    },
 }
 
 cc_library_static {