policy/soap: delete unused method

Author: davidor

gateway/src/apicast/policy/soap/soap.lua

@@ -29,10 +29,6 @@ local soap_action_ctype = 'application/soap+xml'
 
 local new = _M.new
 
-local function starts_with(str, start)
-  return sub(str, 1, len(start)) == start
-end
-
 -- Extracts a SOAP action from the SOAPAction header. Returns nil when not
 -- present.
 local function soap_action_in_header(headers)