Fix warnings with latest nightly

src/platform_impl/linux/common/xkb/mod.rs

@@ -1,4 +1,3 @@
-use std::convert::TryInto;
 use std::ops::Deref;
 use std::os::raw::c_char;
 use std::ptr::{self, NonNull};

src/platform_impl/linux/wayland/event_loop/mod.rs

@@ -10,7 +10,6 @@ use std::sync::atomic::Ordering;
 use std::sync::{Arc, Mutex};
 use std::time::{Duration, Instant};
 
-use sctk::reexports::calloop;
 use sctk::reexports::calloop::Error as CalloopError;
 use sctk::reexports::calloop_wayland_source::WaylandSource;
 use sctk::reexports::client::globals;

src/platform_impl/linux/wayland/window/mod.rs

@@ -3,7 +3,6 @@
 use std::sync::atomic::{AtomicBool, Ordering};
 use std::sync::{Arc, Mutex};
 
-use sctk::reexports::calloop;
 use sctk::reexports::client::protocol::wl_display::WlDisplay;
 use sctk::reexports::client::protocol::wl_surface::WlSurface;
 use sctk::reexports::client::Proxy;

src/platform_impl/linux/x11/mod.rs

@@ -17,7 +17,7 @@ use std::{ptr, slice, str};
 use calloop::generic::Generic;
 use calloop::EventLoop as Loop;
 use calloop::{ping::Ping, Readiness};
-use libc::{self, setlocale, LC_CTYPE};
+use libc::{setlocale, LC_CTYPE};
 use log::warn;
 
 use x11rb::connection::RequestConnection;