pty: remove dead code

pty/src/win/mod.rs

@@ -13,7 +13,6 @@ use winapi::um::winbase::INFINITE;
 pub mod conpty;
 mod procthreadattr;
 mod psuedocon;
-mod readbuf;
 
 use filedescriptor::OwnedHandle;
 

pty/src/win/readbuf.rs

@@ -1,44 +0,0 @@
-/// A simple read buffer
-pub struct ReadBuffer {
-    data: Vec<u8>,
-    /// The position to read data from
-    pos: usize,
-}
-
-impl ReadBuffer {
-    pub fn new() -> Self {
-        let data = Vec::with_capacity(8192);
-        Self { data, pos: 0 }
-    }
-
-    pub fn append(&mut self, buf: &[u8]) {
-        if self.data.len() + buf.len() > self.data.capacity() {
-            if self.pos == self.data.len() {
-                self.pos = 0;
-            } else if self.pos > 0 {
-                let (front, back) = self.data.split_at_mut(self.pos);
-                let len = back.len();
-                front[0..len].copy_from_slice(back);
-
-                self.pos = len;
-                self.data.resize(len, 0);
-            }
-        }
-        self.data.extend_from_slice(buf);
-    }
-
-    pub fn avail(&self) -> usize {
-        self.data.len() - self.pos
-    }
-
-    pub fn consume(&mut self, buf: &mut [u8]) -> usize {
-        let len = buf.len().min(self.avail());
-        if len == 0 {
-            0
-        } else {
-            buf[0..len].copy_from_slice(&self.data[self.pos..self.pos + len]);
-            self.pos += len;
-            len
-        }
-    }
-}