Remove CI

Remove references to our former fiscal sponsor, Community Initiatives.

Related to carpentries/carpentries.org#364 and carpentries/carpentries.org#363.

Author: ErinBecker

_includes/carpentries.html

@@ -21,8 +21,7 @@
     lesson project, The Carpentries provide overall staffing and governance, as
     well as support for assessment, instructor training and mentoring.
     Memberships are joint, and the Carpentries project maintains a shared Code
-    of Conduct. The Carpentries is a fiscally sponsored project of Community
-    Initiatives, a registered 501(c)3 non-profit based in California, USA.</p>
+    of Conduct. The Carpentries is a registered 501(c)3 non-profit based in Delaware, USA.</p>
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