[Docs] Remove old "new" badges (#12662)

Remove new badges that were added with Uplift/Gen 3 documentation.

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### Before
<img width="308" alt="Screenshot 2024-09-19 at 11 07 27 AM"
src="https://github.com/user-attachments/assets/43440540-21be-4044-9e8f-ee3ae19f926a">
<img width="333" alt="Screenshot 2024-09-19 at 11 07 31 AM"
src="https://github.com/user-attachments/assets/150e8eb9-9981-426e-b8be-f9b43bb2f872">

### After
<img width="307" alt="Screenshot 2024-09-19 at 11 07 10 AM"
src="https://github.com/user-attachments/assets/662a5316-d3a0-44cb-a433-7cec411c4e31">
<img width="310" alt="Screenshot 2024-09-19 at 11 07 16 AM"
src="https://github.com/user-attachments/assets/807737bb-378b-44b7-898d-c93e73789eb0">


Gen 3 has been out long enough the content is no longer "new" 

<!--
  Context about the problem that’s being addressed.
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### WHAT is this pull request doing?

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  Summary of the changes committed.

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  <details>
    <summary>Summary of your gif(s)</summary>
    <img src="..." alt="Description of what the gif shows">
  </details>
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### How to 🎩

🖥 [Local development
instructions](https://github.com/Shopify/polaris/blob/main/README.md#install-dependencies-and-build-workspaces)
🗒 [General tophatting
guidelines](https://github.com/Shopify/polaris/blob/main/documentation/Tophatting.md)
📄 [Changelog
guidelines](https://github.com/Shopify/polaris/blob/main/.github/CONTRIBUTING.md#changelog)

### 🎩 checklist

- [ ] Tested a
[snapshot](https://github.com/Shopify/polaris/blob/main/documentation/Releasing.md#-snapshot-releases)
- [ ] Tested on
[mobile](https://github.com/Shopify/polaris/blob/main/documentation/Tophatting.md#cross-browser-testing)
- [ ] Tested on [multiple
browsers](https://help.shopify.com/en/manual/shopify-admin/supported-browsers)
- [ ] Tested for
[accessibility](https://github.com/Shopify/polaris/blob/main/documentation/Accessibility%20testing.md)
- [ ] Updated the component's `README.md` with documentation changes
- [ ] [Tophatted
documentation](https://github.com/Shopify/polaris/blob/main/documentation/Tophatting%20documentation.md)
changes in the style guide

---------

Co-authored-by: Sam Rose <11774595+sam-b-rose@users.noreply.github.com>

.changeset/forty-eyes-kiss.md

@@ -0,0 +1,5 @@
+---
+'polaris.shopify.com': minor
+---
+
+Removes unnecessary new badges from navigation

polaris.shopify.com/content/design/colors/index.mdx

@@ -11,7 +11,6 @@ keywords:
   - grayscale
 hideChildren: true
 showTOC: true
-status: New
 ---
 
 # {frontmatter.title}

polaris.shopify.com/content/design/depth/index.mdx

@@ -9,7 +9,6 @@ keywords:
 icon: CategoriesIcon
 showTOC: true
 hideChildren: true
-status: New
 ---
 
 # {frontmatter.title}

polaris.shopify.com/content/design/icons/index.mdx

@@ -22,7 +22,6 @@ keywords:
   - icons in nav
   - icons in main nav
   - icon colors
-status: New
 ---
 
 # {frontmatter.title}

polaris.shopify.com/content/design/index.mdx

@@ -2,7 +2,6 @@
 title: Design
 description: Design principles serve as guiding notions that shape the design of the Shopify admin, with Polaris providing support in implementing these principles effectively.
 order: 3
-status: New
 icon: PaintBrushFlatIcon
 ---
 

polaris.shopify.com/content/design/layout/index.mdx

@@ -19,7 +19,6 @@ keywords:
   - spacing
 description: Layout determines the placement, positioning, and organization of various components within the UI, such as buttons, menus, content sections, and other visual elements.
 hideChildren: true
-status: New
 ---
 
 # {frontmatter.title}

polaris.shopify.com/content/design/motion/index.mdx

@@ -11,7 +11,6 @@ keywords:
   - interaction
   - transition
 hideChildren: true
-status: New
 ---
 
 # {frontmatter.title}

polaris.shopify.com/content/design/pro-design-language.mdx

@@ -3,7 +3,6 @@ title: Pro design language
 description: Efficiency, intuition, and style combined to empower merchants with data-rich views, action-driven interfaces, and dynamic interactions.
 order: 1
 icon: PaintBrushFlatIcon
-status: New
 ---
 
 # {frontmatter.title}

polaris.shopify.com/content/design/typography/index.mdx

@@ -9,7 +9,6 @@ keywords:
   - fonts
 icon: TextFontIcon
 hideChildren: true
-status: New
 ---
 
 # {frontmatter.title}

polaris.shopify.com/content/patterns/card-layout/index.mdx

@@ -5,7 +5,6 @@ lede: Standardized card layout gives merchants a content structure to rely on.
 previewImg: /images/patterns/card-layout/card-layout-cover-image.png
 url: /patterns/card-layout
 hideChildren: true
-status: New
 ---
 
 <LayoutSection card>

polaris.shopify.com/content/patterns/common-actions/index.mdx

@@ -8,7 +8,6 @@ keywords:
   - actions
 hideChildren: true
 showTOC: true
-status: New
 url: /patterns/common-actions
 variants:
   - 'variants/overview.mdx'