Remove strange use of query params
Remove strange use of query params

 * Remove some legacy code that would infer the HTTP verb from a query
   parameter called 'method'.  This appears to be old development
   code, and analytics show no production usage in the past six
   months.

 [SVCS-298]

TomBaxter/waterbutler,RCOSDP/waterbutler,felliott/waterbutler,CenterForOpenScience/waterbutler,rdhyee/waterbutler