Continuing updating the reformatting of propTypes and set redux, intl functions to end of component

• Removing:
- the reformatting of propTypes and set redux, intl functions to end of component

app/javascript/gabsocial/components/block_heading.js

@@ -2,11 +2,7 @@ import React from 'react'
 import PropTypes from 'prop-types'
 import Heading from './heading'
 
-export default class BlockHeading extends React.PureComponent {
-
-  static propTypes = {
-    title: PropTypes.string.isRequired,
-  }
+class BlockHeading extends React.PureComponent {
 
   render() {
     const { title } = this.props
@@ -20,4 +16,10 @@ export default class BlockHeading extends React.PureComponent {
     )
   }
 
-}
+}
+
+BlockHeading.propTypes = {
+  title: PropTypes.string.isRequired,
+}
+
+export default BlockHeading