Remove duplicated code for unchanged parts of different extension API versions (#10218)

Release Notes:

- N/A

---------

Co-authored-by: Marshall <marshall@zed.dev>
Co-authored-by: Marshall Bowers <elliott.codes@gmail.com>

crates/extension_api/src/extension_api.rs

@@ -13,11 +13,17 @@ pub use serde_json;
 // We explicitly enumerate the symbols we want to re-export, as there are some
 // that we may want to shadow to provide a cleaner Rust API.
 pub use wit::{
-    current_platform, download_file, latest_github_release, make_file_executable, node_binary_path,
-    npm_install_package, npm_package_installed_version, npm_package_latest_version, Architecture,
+    download_file, make_file_executable,
+    zed::extension::github::{
+        latest_github_release, GithubRelease, GithubReleaseAsset, GithubReleaseOptions,
+    },
+    zed::extension::nodejs::{
+        node_binary_path, npm_install_package, npm_package_installed_version,
+        npm_package_latest_version,
+    },
+    zed::extension::platform::{current_platform, Architecture, Os},
     CodeLabel, CodeLabelSpan, CodeLabelSpanLiteral, Command, DownloadedFileType, EnvVars,
-    GithubRelease, GithubReleaseAsset, GithubReleaseOptions, LanguageServerInstallationStatus, Os,
-    Range, Worktree,
+    LanguageServerInstallationStatus, Range, Worktree,
 };
 
 // Undocumented WIT re-exports.