Delete TabBarViewTheming

PiperOrigin-RevId: 714301345

Author: Janette James

components/Tabs/README.md

@@ -149,62 +149,6 @@ Tab bars contain tab bar items with optional icons and text labels. Tab bar item
 ---------------------- | ------------------------------- | ------------------------------------------------------------ | -------------
 **Color**              | `selectionIndicatorStrokeColor`  | `-setSelectionIndicatorStrokeColor:` <br> `-selectionIndicatorStrokeColor` | On primary color
 
-## Theming
-
-Tabs supports Material Theming using a Container Scheme. To learn more about theming extensions, see [here](https://github.com/material-components/material-components-ios/blob/develop/docs/theming.md). Below is a screenshot of an `MDCTabBarView` with the Material Design Shrine theme:
-
-![Shrine tab with Home, Settings, Email and Search text labels and icons](docs/assets/shrine-tabs.png)
-
-### Tabs theming example
-
-To make use of tabs theming install the tabs theming extensions with Cocoapods. First, add the following line to your `Podfile`:
-
-```bash
-pod MaterialComponents/Tabs+TabBarViewTheming
-```
-
-<!--{: .code-renderer.code-renderer--install }-->
-
-Then Run the installer:
-
-```bash
-pod install
-```
-
-Next, import the Tabs theming target, and call the correct theming method.
-
-<!--<div class="material-code-render" markdown="1">-->
-#### Swift
-
-```swift
-import MaterialComponents.MaterialTabs_TabBarViewTheming
-...
-
-// Create an MDCTabbarView
-let tabBar = MDCTabBarView()
-// Create or use your app's Container Scheme
-let containerScheme = MDCContainerScheme()
-// Theme the tab bar with either Primary Theme
-tabBar.applyPrimaryTheme(withScheme: containerScheme)
-// Or Surface Theme
-tabBar.applySurfaceTheme(withScheme: containerScheme)
-```
-
-#### Objective-C
-
-```objc
-// Import the Tabs Theming Extensions header
-#import <MaterialComponents/MaterialTabs+TabBarViewTheming.h>
-...
-// Create or use your app's Container Scheme
-MDCContainerScheme *containerScheme = [[MDCContainerScheme alloc] init];
-// Theme the tab bar with either Primary Theme
-[self.tabBar applyPrimaryThemeWithScheme:containerScheme];
-// Or Surface Theme
-[self.tabBar applySurfaceThemeWithScheme:containerScheme];
-```
-<!--</div>-->
-
 ## Migrating from legacy tabs
 
 Below are some of the differences between `MDCTabBarView` and its predecessor, `MDCTabBar`. If you have been using `MDCTabBar`, make note of the following changes.