Remove blank ORCID from citation file

dopplershift · dopplershift · commit 4a13d18a9522 · 2023-12-06T16:36:34.000-07:00
This fixes validation.
diff --git a/CITATION.cff b/CITATION.cff
@@ -18,7 +18,6 @@ authors:
     affiliation: UCAR/NCAR
   - family-names: Chmielowiec
     given-names: Philip
-    orcid: 
     website: https://github.com/philipc2
     affiliation: UCAR/NCAR
   - family-names: Clyne
