Remove unused imports.

Signed-off-by: Wren Turkal <wt@penguintechs.org>

pcid/src/driver_interface/mod.rs

@@ -1,4 +1,4 @@
-use std::fs::{File, OpenOptions};
+use std::fs::File;
 use std::io::prelude::*;
 use std::{env, io};
 

pcid/src/main.rs

@@ -5,9 +5,7 @@ use std::io::prelude::*;
 use std::os::unix::io::{FromRawFd, RawFd};
 use std::process::Command;
 use std::sync::{Arc, Mutex};
-use std::{env, io, i64, thread};
-
-use syscall::iopl;
+use std::{i64, thread};
 
 use structopt::StructOpt;
 use log::{error, info, warn, trace};

pcid/src/pci/bus.rs

@@ -1,4 +1,4 @@
-use super::{Pci, PciDev, CfgAccess};
+use super::{PciDev, CfgAccess};
 
 pub struct PciBus<'pci> {
     pub pci: &'pci dyn CfgAccess,

pcid/src/pcie/mod.rs

@@ -3,7 +3,6 @@ use std::collections::BTreeMap;
 use std::sync::{Arc, Mutex};
 
 use syscall::flag::PhysmapFlags;
-use syscall::io::Dma;
 
 use smallvec::SmallVec;