Updated common action guidelines (#12739)

This PR updates common action guidelines to remove references to using
tooltips with icon only buttons.

## Why

- Icons used in buttons should be used for common actions that are
universally understood
- Adding icons to every icon only button gets very busy and overwhelming
- Tooltips on buttons isn't a pattern that scales to mobile

Author: sarahill

.changeset/perfect-pans-shop.md

@@ -0,0 +1,5 @@
+---
+'polaris.shopify.com': patch
+---
+
+Updated common action guidelines

polaris.shopify.com/content/patterns/common-actions/variants/best-practices.mdx

@@ -17,7 +17,7 @@ keywords:
     ## Content
 
     Actions should always clearly communicate their purpose by using a text label, an icon, or a combination of both.
-    
+
     See the [actionable language guidelines](/content/actionable-language#buttons) for more detail.
 
     </Stack>
@@ -218,7 +218,6 @@ keywords:
 
 </LayoutSection>
 
-
 <LayoutSection card>
 
   <ExtraLarge>
@@ -249,30 +248,6 @@ keywords:
 
   </Text>
 
-  <Small variant="do">
-
-    ![An image showing two icon only actions in a hover state with supporting tooltips. There's an add action with the tooltip "Add item" and a remove action the tooltip "Remove item".](/images/patterns/common-actions/common-actions-best-practices-desktop-tooltip@2x.png)
-
-    Clarify icon only actions with a tooltip using the verb + noun format for the label.
-
-  </Small>
-
-  <Small variant="do">
-    <video width="100%" height="auto" controls playsInline muted loop>
-      <source
-        src="/images/patterns/common-actions/common-actions-best-practices-desktop-tooltip-delay.mp4"
-        type="video/mp4"
-      />
-    Delay the appearance of tooltips attached to common actions as they can be intrusive.
-    </video>
-
-    Delay the appearance of tooltips attached to common actions as they can be intrusive.
-
-  </Small>
-
-  <Text>
-  </Text>
-
   <Large variant="do">
 
     ![An image of two cards with items displaying actions on hover.](/images/patterns/common-actions/common-actions-best-practices-desktop-hover@2x.png)