fix(specs): body is not required in multiple batch request (generated)

algolia/api-clients-automation#3454

Co-authored-by: algolia-bot <[email protected]>
Co-authored-by: Kai Welke <[email protected]>

Author: algolia-bot

lib/algolia/models/search/multiple_batch_request.rb

@@ -97,8 +97,6 @@ def initialize(attributes = {})
 
         if attributes.key?(:body)
           self.body = attributes[:body]
-        else
-          self.body = nil
         end
 
         if attributes.key?(:index_name)