examples: cleanup imports

examples/2d/texture_atlas.rs

@@ -1,6 +1,8 @@
-use bevy::prelude::*;
-use bevy_asset::{HandleId, LoadState};
-use bevy_sprite::TextureAtlasBuilder;
+use bevy::{
+    asset::{HandleId, LoadState},
+    prelude::*,
+    sprite::TextureAtlasBuilder,
+};
 
 fn main() {
     App::build()

examples/3d/3d_scene.rs

@@ -13,7 +13,6 @@ fn setup(
     mut meshes: ResMut<Assets<Mesh>>,
     mut materials: ResMut<Assets<StandardMaterial>>,
 ) {
-    
     // create a cube and a plane mesh
     let cube_handle = meshes.add(Mesh::from(shape::Cube { size: 1.0 }));
     let plane_handle = meshes.add(Mesh::from(shape::Plane { size: 10.0 }));

examples/shader/shader_custom_material.rs

@@ -1,7 +1,9 @@
-use bevy::prelude::*;
-use bevy_render::{
+use bevy::{
+    prelude::*,
+    render::{
         base_render_graph,
         pipeline::{DynamicBinding, PipelineSpecialization, RenderPipeline},
+    },
 };
 
 fn main() {

examples/shader/shader_defs.rs

@@ -1,7 +1,10 @@
-use bevy::{prelude::*, render::shader};
-use bevy_render::{
+use bevy::{
+    prelude::*,
+    render::{
         base_render_graph,
         pipeline::{DynamicBinding, PipelineSpecialization, RenderPipeline},
+        shader,
+    },
 };
 
 fn main() {

examples/window/multiple_windows.rs

@@ -2,7 +2,7 @@ use bevy::{
     prelude::*,
     render::{
         pass::{
-            LoadOp, PassDescriptor, RenderPassColorAttachmentDescriptor,
+            LoadOp, Operations, PassDescriptor, RenderPassColorAttachmentDescriptor,
             RenderPassDepthStencilAttachmentDescriptor, TextureAttachment,
         },
         texture::{TextureDescriptor, TextureFormat, TextureUsage},
@@ -10,7 +10,6 @@ use bevy::{
     },
     window::{CreateWindow, WindowId, WindowReference},
 };
-use bevy_render::pass::Operations;
 
 fn main() {
     App::build()