fix experimental validation

content/3.defense-systems/rloc.md

@@ -66,26 +66,6 @@ dataUrls:
 
 ## Experimental validation
 
-<mermaid>
-graph LR;
-    Penner_1995[<a href='https://doi.org/10.1006/jmbi.1995.0343'>Penner et al., 1995</a>] --> Origin_0
-    Origin_0[Escherichia coli] --> Expressed_0[Escherichia coli]
-    Expressed_0[Escherichia coli] ----> T4
-    subgraph Title1[Reference]
-        Penner_1995
-end
-    subgraph Title2[System origin]
-        Origin_0
-end
-    subgraph Title3[Expression species]
-        Expressed_0
-end
-    subgraph Title4[Protects against]
-        T4
-end
-    style Title1 fill:none,stroke:none,stroke-width:none
-    style Title2 fill:none,stroke:none,stroke-width:none
-    style Title3 fill:none,stroke:none,stroke-width:none
-    style Title4 fill:none,stroke:none,stroke-width:none
-</mermaid>
+To our knowledge, there is no experimental validation for the RloC system.
+