Remove left-over import statements from root.rs
`root.rs` had import statements not removed when it cease to be an object. Fix that.
//! API for root resources, such as wallpapers and keybindings.
//! Awesome's equivalent of globalconf's properties are accessible via registry keys
-use std::default::Default;
-use std::fmt::{self, Display, Formatter};
-
use cairo_sys::cairo_pattern_t;
-use rlua::{self, LightUserData, Lua, Table, ToLua, UserData,
- UserDataMethods, Value};
+use rlua::{self, LightUserData, Lua, Table, ToLua, Value};
-use common::{class::{Class, ClassBuilder},
- object::{self, Object, Objectable}};
use objects::tag;
/// Handle to the list of global key bindings
