Remove duplicate JSON samples from docs.

There are multiple sample JSON files that have been duplicated in an what I assume to be a renaming operation, where the originals did not get removed.

  -7fce88d7c0c9cca4997301b7db9c6709  ./EditGroupConfiguration.json
  7fce88d7c0c9cca4997301b7db9c6709  ./reqPutGroupConfig.json

  -ae0ca8fc7ebd209a4dc95900afb3be98  ./GetLaunchConfiguration.json
  ae0ca8fc7ebd209a4dc95900afb3be98  ./resGetGroupConfig.json
  ae0ca8fc7ebd209a4dc95900afb3be98  ./resGetLaunchConfig.json

resGetGroupConfig and resGetLaunchConfig are both being used, so they are staying for now.

  -ee75f4b2fd75e4ef22c1a321ff2bcac3  ./GetWebhookinfo copy.json
  -ee75f4b2fd75e4ef22c1a321ff2bcac3  ./GetWebhookinfo.json
  ee75f4b2fd75e4ef22c1a321ff2bcac3  ./reqPutWebhook.json