demos: Fix list of known device extensions to not include WSI_LUNARG

Also remove DEBUG_MARKER from intel_icd list as it doesn't implement the
extension so don't report it.
diff --git a/demos/vulkaninfo.c b/demos/vulkaninfo.c
index 15e9c8f..90a4e83 100644
--- a/demos/vulkaninfo.c
+++ b/demos/vulkaninfo.c
@@ -426,7 +426,7 @@
     VkResult U_ASSERT_ONLY err;
     // Extensions to enable
     static const char *known_extensions[] = {
-        "VK_WSI_LunarG",
+        //TODO add WSI device extension WSI swapchain, WSI_LUNARG is a global extension
     };
 
     uint32_t count = 0;
@@ -482,6 +482,7 @@
 
     uint32_t enabled_extension_count = 0;
 
+#if 0 //TODO add this back in once get WSI device extension in list
     for (uint32_t i = 0; i < ARRAY_SIZE(known_extensions); i++) {
         VkBool32 extension_found = 0;
         for (uint32_t j = 0; j < gpu->device_extension_count; j++) {
@@ -497,6 +498,7 @@
             ERR_EXIT(VK_ERROR_INVALID_EXTENSION);
         }
     }
+#endif
 
     /* request all queues */
     info.queueRecordCount = gpu->queue_count;