remove unnecessary imports

src/libboard_artiq/src/drtioaux.rs

@@ -2,7 +2,6 @@ use core::slice;
 use core::arch::asm;
 
 use core_io::{Error as IoError, ErrorKind as IoErrorKind};
-use crc;
 use io::{proto::{ProtoRead, ProtoWrite},
          Cursor};
 use libboard_zynq::{time::Milliseconds, timer::GlobalTimer};

src/libboard_artiq/src/drtioaux_async.rs

@@ -1,12 +1,10 @@
 use core::slice;
 
 use core_io::{Error as IoError, ErrorKind as IoErrorKind};
-use crc;
 use io::{proto::{ProtoRead, ProtoWrite},
          Cursor};
 use libasync::{block_async, task};
 use libboard_zynq::{time::Milliseconds, timer::GlobalTimer};
-use nb;
 use void::Void;
 
 pub use crate::drtioaux_proto::{Packet, MAX_PACKET};

src/libksupport/src/i2c.rs

@@ -1,4 +1,3 @@
-use libboard_zynq;
 
 use crate::artiq_raise;
 

src/libksupport/src/kernel/api.rs

@@ -2,7 +2,6 @@ use alloc::vec;
 use core::{ffi::VaList, ptr, str};
 
 use libc::{c_char, c_int, size_t};
-use libm;
 use log::{info, warn};
 
 #[cfg(has_drtio)]

src/libksupport/src/kernel/core1.rs

@@ -4,7 +4,7 @@ use alloc::borrow::ToOwned;
 use core::{cell::UnsafeCell, mem, ptr};
 
 use cslice::CSlice;
-use dyld::{self, elf::EXIDX_Entry, Library};
+use dyld::{elf::EXIDX_Entry, Library};
 use libboard_zynq::{gic, mpcore};
 use libcortex_a9::{asm::{dsb, isb},
                    cache::{bpiall, dcci_slice, iciallu},