Remove unnecessary specifier check

Author: nojaf

cli/common/runtime.js

@@ -42,10 +42,7 @@ async function resolvePackageInDeno(pkgName) {
 }
 
 async function resolvePackageRoot(pkgName) {
- const specifier =
- typeof globalThis.Deno !== "undefined"
- ? `npm:${pkgName}/package.json`
- : `${pkgName}/package.json`;
+ const specifier = `${pkgName}/package.json`;
 
  if (typeof import.meta.resolve === "function") {
  const url = import.meta.resolve(specifier);