benchmark: remove v8ForceOptimization calls

This removes common.v8ForceOptimization calls from url and vm benchmark
files.

PR-URL: https://github.com/nodejs/node/pull/11908
Fixes: https://github.com/nodejs/node/issues/11895
Reviewed-By: Timothy Gu <timothygu99@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>

benchmark/url/whatwg-url-idna.js

@@ -37,8 +37,6 @@ function main(conf) {
   const input = inputs[conf.input][to];
   const method = to === 'ascii' ? domainToASCII : domainToUnicode;
 
-  common.v8ForceOptimization(method, input);
-
   bench.start();
   for (var i = 0; i < n; i++) {
     method(input);

benchmark/vm/run-in-context.js

@@ -23,8 +23,6 @@ function main(conf) {
 
   const contextifiedSandbox = vm.createContext();
 
-  common.v8ForceOptimization(vm.runInContext,
-                             '0', contextifiedSandbox, options);
   bench.start();
   for (; i < n; i++)
     vm.runInContext('0', contextifiedSandbox, options);

benchmark/vm/run-in-this-context.js

@@ -21,7 +21,6 @@ function main(conf) {
 
   var i = 0;
 
-  common.v8ForceOptimization(vm.runInThisContext, '0', options);
   bench.start();
   for (; i < n; i++)
     vm.runInThisContext('0', options);