tweak: Remove custom scenario name

Author: ddyurchenko

benchmark/load/insecure-bank/k6.js

@@ -5,12 +5,8 @@ const baseUrl = 'http://localhost:8080';
 
 export const options = {
   discardResponseBodies: true,
-  scenarios: {
-    [`load--insecure-bank--${__ENV.VARIANT}`]: {
-      vus: 5,
-      iterations: 40000
-    },
-  }
+  vus: 5,
+  iterations: 40000
 };
 
 export default function () {

benchmark/load/petclinic/k6.js

@@ -5,12 +5,8 @@ const baseUrl = 'http://localhost:8080';
 
 export const options = {
   discardResponseBodies: true,
-  scenarios: {
-    [`load--petclinic--${__ENV.VARIANT}`]: {
-      vus: 5,
-      iterations: 80000
-    },
-  }
+  vus: 5,
+  iterations: 80000
 };
 
 export default function () {