Remove unneeded dependency from memory PT hal.

libhardware was unused.

Bug: None
Test: links with BOARD_VNDK_VERSION=current
Change-Id: I51f1900795b2af62648da6b1887af797aa7d9c09
diff --git a/transport/memory/1.0/default/Android.bp b/transport/memory/1.0/default/Android.bp
index 9f47244..8c48f4f 100644
--- a/transport/memory/1.0/default/Android.bp
+++ b/transport/memory/1.0/default/Android.bp
@@ -29,7 +29,6 @@
     ],
     shared_libs: [
         "libcutils",
-        "libhardware",
         "libhwbinder",
         "libbase",
         "libutils",