Revert "Update orion-api.md"
Revert "Update orion-api.md"

This reverts commit ecc5649f4debe23abd2dcdc4cef71e444b1c3337.

telefonicaid/fiware-orion,telefonicaid/fiware-orion,telefonicaid/fiware-orion,telefonicaid/fiware-orion,telefonicaid/fiware-orion,telefonicaid/fiware-orion