remove scope from registry

packages/cli/src/commands/create-plugin/createPlugin.ts

@@ -227,7 +227,6 @@ export default async (cmd: Command) => {
   const name = cmd.scope
     ? `@${cmd.scope.replace(/^@/, '')}/plugin-${answers.id}`
     : `plugin-${answers.id}`;
-  const scopeName = cmd.scope ? `@${cmd.scope.replace(/^@/, '')}` : '';
   const npmRegistry = cmd.npmRegistry && cmd.scope ? cmd.npmRegistry : '';
   const privatePackage = cmd.private === false ? false : true;
   const isMonoRepo = await fs.pathExists(paths.resolveTargetRoot('lerna.json'));
@@ -255,7 +254,6 @@ export default async (cmd: Command) => {
       ...answers,
       version,
       backstageVersion,
-      scopeName,
       name,
       privatePackage,
       npmRegistry,

packages/cli/templates/default-plugin/package.json.hbs

@@ -7,7 +7,7 @@
 {{#if privatePackage}}  "private": {{privatePackage}},
 {{/if}}
   "publishConfig": {
-{{#if npmRegistry}}    "{{scopeName}}:registry": "{{npmRegistry}}",
+{{#if npmRegistry}}    "registry": "{{npmRegistry}}",
 {{/if}}
     "access": "public",
     "main": "dist/index.esm.js",