Remove unused imports.

test.rs

@@ -1,24 +1,20 @@
 extern mod opengles;   // FIXME: Should only be for tests.
-use glut::{check_loop, create_window, destroy_window, init, init_display_mode, swap_buffers, GLint};
+use glut::{swap_buffers, GLint};
 use self::opengles::gl2::{ARRAY_BUFFER, COLOR_BUFFER_BIT, COMPILE_STATUS};
 use self::opengles::gl2::{FRAGMENT_SHADER, LINK_STATUS, NO_ERROR, STATIC_DRAW};
-use self::opengles::gl2::{TRIANGLE_STRIP, VERTEX_SHADER, GLclampf, GLenum};
+use self::opengles::gl2::{TRIANGLE_STRIP, VERTEX_SHADER, GLenum};
 use self::opengles::gl2::{GLsizei, GLuint, attach_shader, bind_buffer};
 use self::opengles::gl2::{buffer_data, create_program, clear, clear_color};
 use self::opengles::gl2::{compile_shader, create_shader, draw_arrays};
 use self::opengles::gl2::{enable_vertex_attrib_array, gen_buffers};
 use self::opengles::gl2::{get_attrib_location, get_error, get_program_iv};
 use self::opengles::gl2::{get_shader_info_log, get_shader_iv};
-use self::opengles::gl2::{get_uniform_location, link_program, shader_source};
+use self::opengles::gl2::{link_program, shader_source};
 use self::opengles::gl2::{use_program, vertex_attrib_pointer_f32};
 
-use core::comm::{Chan, Port};
-use libc::{c_int, c_uint};
-use io::println;
-use ptr::{addr_of, null};
-use str::to_bytes;
-use task::TaskBuilder;
-use vec::raw::to_ptr;
+use core::libc::c_int;
+use core::io::println;
+use core::str::to_bytes;
 
 fn fragment_shader_source() -> ~str {
     ~"