fix(starters): revert Kentico Kontent starter (#19213)
fix(starters): revert Kentico Kontent starter (#19213)

Reverting this as it's causing a build error for .org. See https://circleci.com/gh/gatsbyjs/gatsby/266617
gatsbyjs/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby