fix(rsc): Remove entries file setup step and remove from test fixtures (

#10549)

**Problem**
This is a follow up to #10533 which removed the need for the
`entries.ts` file. That PR failed to remove the file from both the
existing RSC test fixtures and the setup command.

**Changes**
1. Removes the `entries.ts` file from the RSC test fixtures
2. Removes the step in the RSC setup command that adds the `entries.ts`
file to a project.

packages/cli/src/commands/experimental/setupRscHandler.js

@@ -77,20 +77,6 @@ export const handler = async ({ force, verbose }) => {
         },
         options: { persistentOutput: true },
       },
-      {
-        title: 'Adding entries.ts...',
-        task: async () => {
-          const entriesTemplate = fs.readFileSync(
-            path.resolve(__dirname, 'templates', 'rsc', 'entries.ts.template'),
-            'utf-8',
-          )
-
-          // Can't use rwPaths.web.entries because it's not created yet
-          writeFile(path.join(rwPaths.web.src, 'entries.ts'), entriesTemplate, {
-            overwriteExisting: force,
-          })
-        },
-      },
       {
         title: `Overwriting entry.server${ext}...`,
         task: async () => {