fix: 删除在 #949 中意外添加的旧版ida (#1027)

https://github.com/DragonOS-Community/DragonOS/pull/949

Signed-off-by: longjin <longjin@DragonOS.org>

kernel/src/libs/ida/src/lib.rs

@@ -1,55 +0,0 @@
-#![no_std]
-#![feature(core_intrinsics)]
-#![allow(clippy::needless_return)]
-
-use core::intrinsics::unlikely;
-use core::sync::atomic::{AtomicBool, AtomicUsize, Ordering};
-
-/// id分配器
-///
-/// TODO: 当前只是为了简单实现功能，将来这里应使用类似linux的ida的方式去实现
-#[derive(Debug)]
-pub struct IdAllocator {
-    current_id: AtomicUsize,
-    max_id: usize,
-    dead: AtomicBool,
-}
-
-impl IdAllocator {
-    /// 创建一个新的id分配器
-    pub const fn new(initial_id: usize, max_id: usize) -> Self {
-        Self {
-            current_id: AtomicUsize::new(initial_id),
-            max_id,
-            dead: AtomicBool::new(false),
-        }
-    }
-
-    /// 分配一个新的id
-    ///
-    /// ## 返回
-    ///
-    /// 如果分配成功，返回Some(id)，否则返回None
-    pub fn alloc(&self) -> Option<usize> {
-        if unlikely(self.dead.load(Ordering::SeqCst)) {
-            return None;
-        }
-
-        let ret = self.current_id.fetch_add(1, Ordering::SeqCst);
-        // 如果id溢出，panic
-        if ret == self.max_id {
-            self.dead.store(true, Ordering::SeqCst);
-            return None;
-        }
-
-        return Some(ret);
-    }
-
-    pub fn free(&self, _id: usize) {
-        // todo: free
-    }
-
-    pub fn get_max_id(&self) -> usize {
-        self.max_id
-    }
-}