docs: remove unavailable video embed from Delta Lake page (#10384)

Author: nopcoder

docs/src/integrations/delta.md

@@ -88,8 +88,6 @@ Here, `main` is the name of the lakeFS branch from which the delta table was exp
 
 To enable Delta table exports to Unity catalog use the Unity [catalog integration guide](unity-catalog.md).
 
-<iframe data-uc-allowed="true" width="420" height="315" src="https://www.youtube.com/embed/rMDsnh7S2O0"></iframe>
-
 ## Limitations
 
 <h3>Multi-Writer Support in lakeFS for Delta Lake Tables</h3>