chore(shirabe): remove ports of PHP @deprecated APIs

Composer does not use its own deprecated APIs internally, so drop their
Rust ports: whole deprecated classes, methods, constants, and field.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

1 files changed, 0 insertions, 21 deletions

diff --git a/crates/shirabe/src/autoload/class_map_generator.rs b/crates/shirabe/src/autoload/class_map_generator.rs
deleted file mode 100644
index 06dc34d..0000000
--- a/crates/shirabe/src/autoload/class_map_generator.rs
+++ /dev/null
@@ -1,21 +0,0 @@
-//! ref: composer/src/Composer/Autoload/ClassMapGenerator.php
-
-/// `Composer\Autoload\ClassMapGenerator`.
-///
-/// Deprecated since Composer 2.4.0 in favor of the composer/class-map-generator
-/// package (`shirabe-class-map-generator`), which Composer itself now uses
-/// directly. Composer's own code no longer references this class, so its
-/// `dump` / `createMap` methods are intentionally left unported.
-///
-/// Even though it is deprecated, plugins may still use it, so this type will
-/// eventually have to be implemented alongside plugin API support. It is left
-/// here intentionally so that implementation is not forgotten.
-///
-/// TODO(plugin): implement `dump` / `createMap` for plugins still relying on
-/// this deprecated class.
-#[derive(Debug)]
-#[deprecated(
-    since = "Composer 2.4.0",
-    note = "use the composer/class-map-generator package (shirabe-class-map-generator) instead"
-)]
-pub struct ClassMapGenerator;