Suppress unused-value warning

Test: m checkbuild
Bug: 111759196
Change-Id: I35a16fd013d84a2288f9efa9ef52043de890e1d8
diff --git a/Android.bp b/Android.bp
index 7cdb6fe..52689a08 100644
--- a/Android.bp
+++ b/Android.bp
@@ -36,6 +36,7 @@
         "-Wno-switch",
         "-Wno-absolute-value",
         "-Wno-non-literal-null-conversion",
+        "-Wno-unused-value",
         "-Wno-unused-variable",
         "-Wno-unused-parameter",
         "-Wno-empty-body",