Update about_betydb.md

Author: dlebauer

about_betydb.md

@@ -116,12 +116,6 @@ from a species in an experimental low-input, high diversity prairie.
 
 An annotated, interactive schema can be accessed on the website by selecting ["Docs --> Schema"](https://www.betydb.org/schemas).[^1]
 
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-<a name="Figure-1"></a>![BETYdb Schema as Entity-Relationship Diagram](figures/summarymodel_lg.png "Figure 1")
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-**Figure 1**: Abbreviated schema for BETYdb.  Up-to-date versions of this figure and of the other figures and tables in this document may be found at https://www.betydb.org/schemas.
-[^1]
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 ## Design