Remove unneeded class

Removed image-noshadow class from images.

doc/ci/examples/end_to_end_testing_webdriverio/index.md

@@ -14,7 +14,7 @@ environment, reducing the effort to assess the impact of changes. Thus, when we
 and it will immediately be clear that the application can still be properly built and deployed. After all, you can _see_ it
 running!
 
-<img src="img/deployed_dependency_update.png" alt="dependencies.io" class="image-noshadow">
+<img src="img/deployed_dependency_update.png" alt="dependencies.io">
 
 However, looking at the freshly deployed code to check whether it still looks and behaves as
 expected is repetitive manual work, which means it is a prime candidate for automation. This is

doc/development/documentation/styleguide.md

@@ -1237,16 +1237,6 @@ that:
 - Are accurate, succinct, and unique.
 - Don't use _image of…_ or _graphic of…_ to describe the image.
 
-### Remove image shadow
-
-All images displayed on the [GitLab documentation site](https://docs.gitlab.com)
-have a box shadow by default. To remove the box shadow, use the image class
-`.image-noshadow` applied directly to an HTML `img` tag:
-
-```html
-<img src="path/to/image.jpg" alt="Alt text (required)" class="image-noshadow">
-```
-
 ### Compress images
 
 You should always compress any new images you add to the documentation. One

doc/user/project/pages/index.md

@@ -29,7 +29,7 @@ directly from a repository in GitLab.
 </ul>
 </p>
 </div>
-<div class="col-md-3"><img src="img/ssgs_pages.png" alt="Examples of SSGs supported by Pages" class="image-noshadow middle display-block"></div>
+<div class="col-md-3"><img src="img/ssgs_pages.png" alt="Examples of SSGs supported by Pages" class="middle display-block"></div>
 </div>
 
 To publish a website with Pages, you can use any SSG,
@@ -89,7 +89,7 @@ need admin access to your domain's registrar (or control panel) to set it up wit
 
 The following diagrams show the workflows you might follow to get started with Pages.
 
-<img src="img/new_project_for_pages_v12_5.png" alt="New projects for GitLab Pages" class="image-noshadow">
+<img src="img/new_project_for_pages_v12_5.png" alt="New projects for GitLab Pages">
 
 ## Access to your Pages site