Remove pre-release badges from disclosure docs

Author: devongovett

packages/@react-aria/disclosure/docs/useDisclosure.mdx

@@ -22,7 +22,6 @@ import Anatomy from './anatomy.svg';
 ---
 category: Navigation
 keywords: [disclosure, collapse, expand, aria]
-preRelease: alpha
 ---
 
 # useDisclosure

packages/@react-stately/disclosure/docs/useDisclosureGroupState.mdx

@@ -17,7 +17,6 @@ import packageData from '@react-stately/disclosure/package.json';
 ---
 category: Navigation
 keywords: [disclosure, collapse, expand, state]
-preRelease: alpha
 ---
 
 # useDisclosureGroupState

packages/@react-stately/disclosure/docs/useDisclosureState.mdx

@@ -17,7 +17,6 @@ import packageData from '@react-stately/disclosure/package.json';
 ---
 category: Navigation
 keywords: [disclosure, state]
-preRelease: alpha
 ---
 
 # useDisclosureState

packages/react-aria-components/docs/Disclosure.mdx

@@ -23,7 +23,6 @@ import Anatomy from './DisclosureAnatomy.svg';
 category: Navigation
 keywords: [disclosure, collapse, expand, aria, accordion]
 type: component
-preRelease: alpha
 ---
 
 # Disclosure

packages/react-aria-components/docs/DisclosureGroup.mdx

@@ -25,7 +25,6 @@ import Anatomy from './DisclosureGroupAnatomy.svg';
 category: Navigation
 keywords: [disclosure, accordion, collapse, expand, aria]
 type: component
-preRelease: alpha
 ---
 
 # DisclosureGroup