Temporarily remove grouped des plot from main page

The plot was removed in a previous commit. I will re-run these benchmarks and post an updated version soon.

docs/index.md

@@ -53,10 +53,12 @@ The benchmarks below were performed on streams of RDF graphs or datasets, but Je
   <figcaption markdown style="max-width: 100%;">Serialization speed of a stream of RDF graphs or RDF datasets, averaged over 13 datasets (RiverBench 2.1.0 profile [`stream-mixed-rdfstar`](https://w3id.org/riverbench/v/2.1.0/profiles/stream-mixed-rdfstar), task [`stream-serialization-throughput`](https://w3id.org/riverbench/v/2.1.0/tasks/stream-serialization-throughput)).<br>* Partial results for RDF/XML and JSON-LD (some datasets not supported).<br>[More details about the benchmark](performance.md).</figcaption>
 </figure>
 
+<!--
 <figure markdown="span">
   ![Deserialization speed bar plot](assets/benchmarks/grouped_des.png){ width="100%" }
   <figcaption markdown style="max-width: 100%;">Deserialization (parsing) speed of a stream of RDF graphs or RDF datasets, averaged over 13 datasets (RiverBench 2.1.0 profile [`stream-mixed-rdfstar`](https://w3id.org/riverbench/v/2.1.0/profiles/stream-mixed-rdfstar), task [`stream-deserialization-throughput`](https://w3id.org/riverbench/v/2.1.0/tasks/stream-deserialization-throughput)).<br>* Partial results for RDF/XML and JSON-LD (some datasets not supported).<br>[More details about the benchmark](performance.md).</figcaption>
 </figure>
+-->
 
 ## See also