Update data-flow-window.md

Removed the image windows7.png, which was confusing and unnecessary.

Author: jonburchel

articles/data-factory/data-flow-window.md

@@ -42,8 +42,6 @@ The window slider has two values to set: the values before the current row and t
 ## Window columns
 Lastly, use the Expression Builder to define the aggregations you wish to use with the data windows such as RANK, COUNT, MIN, MAX, DENSE RANK, LEAD, LAG, etc.
 
-:::image type="content" source="media/data-flow/windows7.png" alt-text="Screenshot shows the result of the windowing action.":::
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 The full list of aggregation and analytical functions available for you to use in the Data Flow Expression Language via the Expression Builder are listed in [Data transformation expressions in mapping data flow](data-transformation-functions.md).
 
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