放弃使用自定义的format宏

src/kernel/clock/time.rs

@@ -1,8 +1,6 @@
 use core::{cmp::Ordering, ops::Sub, time::Duration};
 
-use alloc::string::ToString;
-
-use crate::format;
+use alloc::{format, string::ToString};
 
 extern "C" {
     fn system_time_get() -> usize;

src/libk/string/format/mod.rs

@@ -1,38 +0,0 @@
-use alloc::string::{String, ToString};
-
-#[macro_export]
-macro_rules! format {
-    ( $s : expr, $( $e : expr ),* ) => {{
-        use crate::libk::string::format::Format;
-        let mut res = $s.to_string();
-        $(
-            res.format($e);
-        )*
-        res
-    }};
-    () => {};
-}
-
-pub trait Format<T: ToString> {
-    fn format(&mut self, f: T);
-}
-
-impl<T: ToString> Format<T> for String {
-    fn format(&mut self, f: T) {
-        let mut res = String::new();
-        let mut formatting = false;
-        for c in self.chars().into_iter() {
-            if c == '{' {
-                formatting = true;
-                res += &f.to_string();
-            } else if c == '}' {
-                formatting = false;
-            }
-            if !formatting {
-                res.push(c);
-            }
-        }
-        self.clear();
-        self.push_str(&res);
-    }
-}

src/libk/string/mod.rs

@@ -1 +0,0 @@
-pub mod format;