node: signing the CLA is no longer a requirement

Author: tjfontaine

CONTRIBUTING.md

@@ -134,12 +134,6 @@ feature branch.  Post a comment in the pull request afterwards; GitHub does
 not send out notifications when you add commits.
 
 
-### CONTRIBUTOR LICENSE AGREEMENT
-
-Please visit http://nodejs.org/cla.html and sign the Contributor License
-Agreement.  You only need to do that once.
-
-
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