layers: MemTracker fix to skip COLOR usage bit check for now

Now that Attachments are generalized and not color or DS specific, need to make sure we only check usage bits appropriate for a given image.
diff --git a/layers/mem_tracker.cpp b/layers/mem_tracker.cpp
index 31f5075..4f0da34 100644
--- a/layers/mem_tracker.cpp
+++ b/layers/mem_tracker.cpp
@@ -2132,7 +2132,7 @@
 }
 
 VK_LAYER_EXPORT VkResult VKAPI vkCreateAttachmentView(
-    VkDevice                               device,
+    VkDevice                          device,
     const VkAttachmentViewCreateInfo *pCreateInfo,
     VkAttachmentView                 *pView)
 {
@@ -2145,8 +2145,10 @@
         MT_OBJ_BINDING_INFO* pInfo = get_object_binding_info(pCreateInfo->image.handle, VK_OBJECT_TYPE_IMAGE);
         if (pInfo) {
             if (VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO == pInfo->create_info.image.sType) {
-                validate_usage_flags(device, pInfo->create_info.image.usage, VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT, true,
-                                     pCreateInfo->image.handle, VK_OBJECT_TYPE_IMAGE, "image", "vkCreateAttachmentView()", "VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT");
+                // TODO : Now that this is generalized for all Attachments, need to only check COLOR or DS USAGE bits
+                //  if/when we know that Image being attached to is Color or DS. Can probably do this for DS based on format
+//                validate_usage_flags(device, pInfo->create_info.image.usage, VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT, true,
+//                                     pCreateInfo->image.handle, VK_OBJECT_TYPE_IMAGE, "image", "vkCreateAttachmentView()", "VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT");
             } else if (VK_STRUCTURE_TYPE_SWAP_CHAIN_CREATE_INFO_WSI == pInfo->create_info.swapchain.sType) {
                 validate_usage_flags(device, pInfo->create_info.swapchain.imageUsageFlags, VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT, true,
                                      pCreateInfo->image.handle, VK_OBJECT_TYPE_IMAGE, "image", "vkCreateAttachmentView()", "VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT");