This function can be used to pre-check (for removal) all recruiters in your LinkedIn connections list.

[1] flag_linkedin_recruiters.js

/*
  This function can be used to pre-check (for removal)
  all recruiters in your LinkedIn connections list.

  It excludes recruiters that are also colleagues, so
  you don't accidentally get any false positivies.

  It doesn't actually do any deletion, just makes the
  connections list focused solely on recruiters. The
  deletion itself is up to you.

  Note: You should scroll down to the bottom of your
  connections list until they have all lazy-loaded
  into the DOM. Then run this snippet…
*/

(function ($) {
  $('.contact-item-view').each(function () {
    var row = $(this)
    var checkbox = row.find('input[type="checkbox"]')

    var tagListText = row.find('.tag-list').text()
    var isColleague = tagListText.match(/colleague/gi)

    var title = row.find('.title').text()

    var isRecruiter =
    title.match(/account executive|account manager|business development manager|hiring|recruit|talent/gi)

    if (isRecruiter && !isColleague) {
      checkbox.prop('checked', true)
    } else {
      row.hide()
    }
  })
})(this.jQuery)

[2] delete_linkedin_recruiters.js

/*
  After running the above script, to actually
  do a batch delete, use this snippet…
*/

(function ($) {
  $('.contact-item-view:visible').each(function () {
    var row = $(this)
    var checkbox = row.find('input[type="checkbox"]')
    var isChecked = checkbox.prop('checked')

    // Get contact's ID.
    var id =
    row
      .find('a[href*="/contacts/view?id="]')
      .attr('href')
      .split('?id=')[1]
      .split('&')[0]

    // Build the URL.
    var url = [
      '/contacts/api/contacts/',
      id,
      '/'
    ].join('')

    // Is it checked?
    if (isChecked) {
      // Send the request.
      $.ajax({
        url: url,
        type: 'DELETE'
      })
    }
  })
})(this.jQuery)