bug 13038: Remove support for multiple GPUs

https://cvs.khronos.org/bugzilla/show_bug.cgi?id=13038
diff --git a/tests/image_tests.cpp b/tests/image_tests.cpp
index d9a6e27..7a6fbd5 100644
--- a/tests/image_tests.cpp
+++ b/tests/image_tests.cpp
@@ -227,7 +227,7 @@
 
     ASSERT_NE(0, mem_req.size) << "vkGetObjectInfo (Image): Failed - expect images to require memory";
     mem_info.allocationSize = mem_req.size;
-    mem_info.memProps       = VK_MEMORY_PROPERTY_SHAREABLE_BIT;
+    mem_info.memProps       = 0;
 
     /* allocate memory */
     err = vkAllocMemory(device(), &mem_info, &m_image_mem);