usbd - remove unused libcutils dep

Well, the dependency of my dependency is still my dependency, so it'll
still be loaded, but there is no need for the declaration here.

Bug: N/A
Test: N/A
Change-Id: I27495eee1a76401dba316f425c2e43a692357543

usbd/Android.bp

@@ -13,6 +13,5 @@ cc_binary {
         "libutils",
         "libhardware",
         "android.hardware.usb.gadget@1.0",
-        "libcutils",
     ],
 }