Merge pull request #2798 from francoloma/patch-1

Update noaa-ncn.yaml

Author: cstner

datasets/noaa-ncn.yaml

@@ -6,7 +6,6 @@ Description: |
       - [NOAA-NCN on AWS](https://noaa-cors-pds.s3.amazonaws.com/index.html)
       - [NGS server: https://geodesy.noaa.gov/corsdata/](https://geodesy.noaa.gov/corsdata/)
       - [NGS's customized data request service (UFCORS)](https://geodesy.noaa.gov/UFCORS/)
-      - [NGS Anonymous ftp://geodesy.noaa.gov/cors/ - This service is going away on August 02, 2021!](ftp://geodesy.noaa.gov/cors/)
   - #### NCN Data and Products
       - **RINEX**: The GPS/GNSS data collected at NCN stations are made available to the public by NGS in Receiver INdependent EXchange (RINEX) format. Most data are available within 1 hour (60 minutes) from when they were recorded at the remote site, and a few sites have a delay of 24 hours (1440 minutes).<br/>RINEX data can be found at: *rinex/`YYYY`/`DDD`/`ssss`/*
       - **Station logs**: