Remove RegisterForeignDeviceMem test code

Use an "if 0" to remove the code, as it is not working as expected. The
test is supposed to test mapping from a foreign device (like a NIC), so
it uses a separate GPU to map, but this mapping can be evicted and thus
the test can fail unexpectedly. Remove the code until the test can be
reworked

Change-Id: Ie4a15c2a018bbd8e931b06b6700d10b3be86e410

tests/kfdtest/src/KFDGraphicsInterop.cpp

@@ -132,6 +132,12 @@ TEST_F(KFDGraphicsInterop, RegisterGraphicsHandle) {
     TEST_END
 }
 
+#if 0
+/* This test isn't testing things the way we wanted it to. It is flaky and
+ * will end up failing if the memory is evicted, which isn't possible for what 
+ * it is intended to test. It needs a rework
+ */
+
 /* Third-party device memory can be registered for GPU access in
  * ROCm stack. Test this feature. Third party device is mimicked
  * in multi-GPU system using Graphics stack (libdrm). CPU accessible
@@ -222,3 +228,4 @@ TEST_F(KFDGraphicsInterop, RegisterForeignDeviceMem) {
 
     TEST_END
 }
+#endif