Revert "Erfans amazing fix"

This reverts commit 6dc565f.

Author: Hazardu

include/nbl/video/utilities/IUtilities.h

@@ -355,7 +355,7 @@ namespace nbl::video
             auto* cmdpool = cmdbuf->getPool();
             assert(cmdbuf->isResettable());
             assert(cmdpool->getQueueFamilyIndex() == queue->getFamilyIndex());
-            // assert(cmdbuf->getRecordingFlags().hasFlags(IGPUCommandBuffer::EU_ONE_TIME_SUBMIT_BIT)); // We should fix the example but ignore this for now.
+            assert(cmdbuf->getRecordingFlags().hasFlags(IGPUCommandBuffer::EU_ONE_TIME_SUBMIT_BIT));
 
             // no pipeline barriers necessary because write and optional flush happens before submit, and memory allocation is reclaimed after fence signal
             for (size_t uploadedSize = 0ull; uploadedSize < bufferRange.size;)