Remove invalid ISO "none" option

virtweb_frontend/src/widgets/forms/VMSelectIsoInput.tsx

@@ -68,15 +68,13 @@ export function VMSelectIsoInput(p: {
             p.onChange(p.attachedISOs);
           }
         }}
-        options={[
-          { label: "None", value: undefined },
-          ...p.isoList.map((i) => {
+        options={p.isoList.map((i) => {
             return {
               label: `${i.filename} ${filesize(i.size)}`,
               value: i.filename,
             };
-          }),
-        ]}
+          })
+        }
       />
     </>
   );