Update for 0.29.3 changes

Signed-off-by: John Nunley <dev@notgull.net>

src/platform_impl/linux/x11/event_processor.rs

@@ -1144,7 +1144,7 @@ impl<T: 'static> EventProcessor<T> {
                 if keycode < KEYCODE_OFFSET as u32 {
                     return;
                 }
-                let physical_key = keymap::raw_keycode_to_keycode(keycode);
+                let physical_key = keymap::raw_keycode_to_physicalkey(keycode);
 
                 callback(Event::DeviceEvent {
                     device_id,

src/platform_impl/linux/x11/mod.rs

@@ -27,7 +27,7 @@ use std::{
     cell::{Cell, RefCell},
     collections::{HashMap, HashSet},
     ffi::CStr,
-    fmt, mem,
+    fmt,
     ops::Deref,
     os::{
         raw::*,