Remove unused Android.mk for hidl_gen_test.
am: 0c87d633d3

Change-Id: Id289513d0d93a6247ea2dfec7f8b4a55a5016179
diff --git a/main.cpp b/main.cpp
index fc6b013..ea317a7 100644
--- a/main.cpp
+++ b/main.cpp
@@ -869,7 +869,6 @@
         out.indent([&] {
             out << "\"libhidlbase\",\n"
                 << "\"libhidltransport\",\n"
-                << "\"libhwbinder\",\n"
                 << "\"libutils\",\n"
                 << "\"" << makeLibraryName(packageFQName) << "\",\n";