ref(react-native): Remove appcenter subcommand (#3004)

### Description
The `react-native appcenter` subcommand has been deprecated and is no longer needed. This change removes the entire subcommand implementation, including associated utility functions and related code.

### Issues
* resolves: #2489
* resolves: CLI-70

---
<a href="https://cursor.com/background-agent?bcId=bc-9f461c4f-40d8-4689-be4d-6bf60878cb91"><picture><source media="(prefers-color-scheme: dark)" srcset="https://cursor.com/open-in-cursor-dark.svg"><source media="(prefers-color-scheme: light)" srcset="https://cursor.com/open-in-cursor-light.svg"><img alt="Open in Cursor" src="https://cursor.com/open-in-cursor.svg"></picture></a>&nbsp;<a href="https://cursor.com/agents?id=bc-9f461c4f-40d8-4689-be4d-6bf60878cb91"><picture><source media="(prefers-color-scheme: dark)" srcset="https://cursor.com/open-in-web-dark.svg"><source media="(prefers-color-scheme: light)" srcset="https://cursor.com/open-in-web-light.svg"><img alt="Open in Web" src="https://cursor.com/open-in-web.svg"></picture></a>

Author: cursoragent

src/api/mod.rs

@@ -14,6 +14,7 @@ mod pagination;
 use std::borrow::Cow;
 use std::cell::RefCell;
 use std::collections::HashMap;
+#[cfg(any(target_os = "macos", not(feature = "managed")))]
 use std::fs::File;
 use std::io::{self, Read as _, Write};
 use std::rc::Rc;
@@ -1255,6 +1256,7 @@ impl ApiRequest {
     }
 
     /// enables or disables redirects.  The default is off.
+    #[cfg(any(target_os = "macos", not(feature = "managed")))]
     pub fn follow_location(mut self, val: bool) -> ApiResult<Self> {
         debug!("follow redirects: {val}");
         self.handle.follow_location(val)?;

src/commands/react_native/appcenter.rs

@@ -1,15 +1,13 @@
 use anyhow::Result;
 use clap::{ArgMatches, Command};
 
-pub mod appcenter;
 pub mod gradle;
 #[cfg(target_os = "macos")]
 pub mod xcode;
 
 macro_rules! each_subcommand {
     ($mac:ident) => {
         $mac!(gradle);
-        $mac!(appcenter);
         #[cfg(target_os = "macos")]
         $mac!(xcode);
     };