Merge pull request #114 from pudnax/depth_typo

Clean probably missed stuff from '0.5 -> 0.6'

docs/beginner/tutorial8-depth/README.md

@@ -35,7 +35,6 @@ impl Texture {
         let desc = wgpu::TextureDescriptor {
             label: Some(label),
             size,
-            array_layer_count: 1,
             mip_level_count: 1,
             sample_count: 1,
             dimension: wgpu::TextureDimension::D2,
@@ -45,7 +44,6 @@ impl Texture {
         };
         let texture = device.create_texture(&desc);
 
-        let texture = device.create_texture(&desc);
         let view = texture.create_view(&wgpu::TextureViewDescriptor::default());
         let sampler = device.create_sampler(
             &wgpu::SamplerDescriptor { // 4.