remove member affiliation

Author: devanshimodha

_data/contributer-experience-workgroup/members.yml

@@ -8,7 +8,7 @@
 
 - name: Devanshi Modha	
   github: devanshimodha
-  affiliation: Diversity in Swift champion
+  affiliation: 
 
 - name: Egor Zhdan
   github: egorzhdan