Removed prop-types global import, added to files directly

• Removed:
- prop-types global import, added to files directly

app/javascript/gabsocial/features/compose/components/poll_button.js

@@ -1,4 +1,5 @@
 import React from 'react'
+import PropTypes from 'prop-types'
 import { connect } from 'react-redux'
 import { defineMessages, injectIntl } from 'react-intl'
 import { addPoll, removePoll } from '../../../actions/compose'