Switch usbip_test to run as a unit tests instead of testmapping-host

There is no particular reason to use test-mapping when it can run
as a unit tests host side.

It can still be executed as a device tests if the team needed it.

Change-Id: Ic9ec3206b7ece8e63c513fb3ccf9885ecfcf654e
Test: presubmit
Bug: 355009651
diff --git a/emulator/usbpt/usbip-service/Android.bp b/emulator/usbpt/usbip-service/Android.bp
index 265e5ba..1dd11b0 100644
--- a/emulator/usbpt/usbip-service/Android.bp
+++ b/emulator/usbpt/usbip-service/Android.bp
@@ -53,10 +53,9 @@
     name: "usbip_test",
     defaults: ["usbip_defaults"],
     srcs: ["UsbIpTest.cpp"],
-    test_suites: ["general-tests"],
 
     test_options: {
-        unit_test: false,
+        unit_test: true,
     },
     shared_libs: [
         "usbip_utils",