Fix some compiler warnings

Unused things have been removed.

src/renderer/mod.rs

@@ -25,7 +25,6 @@ use cgmath;
 use gl::types::*;
 use gl;
 use grid::Grid;
-use index;
 use notify::{Watcher as WatcherApi, RecommendedWatcher as Watcher, op};
 use term::{self, cell, Cell};
 

src/term.rs

@@ -170,8 +170,6 @@ pub mod mode {
 
 pub use self::mode::TermMode;
 
-pub const CURSOR_SHAPE: char = '█';
-
 pub const DEFAULT_FG: Rgb = Rgb { r: 0xea, g: 0xea, b: 0xea};
 pub const DEFAULT_BG: Rgb = Rgb { r: 0, g: 0, b: 0};
 pub const TAB_SPACES: usize = 8;
@@ -362,11 +360,6 @@ impl Term {
         &self.size_info
     }
 
-    #[inline]
-    pub fn grid(&self) -> &Grid<Cell> {
-        &self.grid
-    }
-
     #[inline]
     pub fn mode(&self) -> &TermMode {
         &self.mode
@@ -382,11 +375,6 @@ impl Term {
         }
     }
 
-    #[inline]
-    pub fn cursor(&self) -> &Cursor {
-        &self.cursor
-    }
-
     /// Set character in current cursor position
     fn set_char(&mut self, c: char) {
         if self.cursor.col == self.grid.num_cols() {