Apply some recent clippy lint fixes

ctru-rs/src/applets/swkbd.rs

@@ -90,7 +90,7 @@ impl Swkbd {
     /// (from 1-3).
     pub fn init(keyboard_type: Kind, num_buttons: i32) -> Self {
         unsafe {
-            let mut state = Box::new(SwkbdState::default());
+            let mut state = Box::default();
             swkbdInit(state.as_mut(), keyboard_type as u32, num_buttons, -1);
             Swkbd { state }
         }

ctru-rs/src/console.rs

@@ -17,7 +17,7 @@ impl<'screen> Console<'screen> {
     /// previously (including other consoles). The new console is automatically selected for
     /// printing.
     pub fn init(screen: RefMut<'screen, dyn Screen>) -> Self {
-        let mut context = Box::new(PrintConsole::default());
+        let mut context = Box::default();
 
         unsafe { consoleInit(screen.as_raw(), context.as_mut()) };