Remove unused CORS headers.
Remove unused CORS headers.

icereval/waterbutler,kwierman/waterbutler,Johnetordoff/waterbutler,rafaeldelucena/waterbutler,cosenal/waterbutler,felliott/waterbutler,rdhyee/waterbutler,chrisseto/waterbutler,hmoco/waterbutler,RCOSDP/waterbutler,Ghalko/waterbutler,CenterForOpenScience/waterbutler,TomBaxter/waterbutler