removed the feed being passed to Curl::Multi.new

This is weird. There are no other calls to Curl::Multi.new that pass
a feed that I can find and the source for curb specifies that it
doesn't take any parameters. I've removed the feeds being passed
in the specs and all tests now pass.

spec/feedzirra/feed_spec.rb

@@ -235,7 +235,7 @@ def self.able_to_parse?(val)
 
     describe "#add_url_to_multi" do
       before(:each) do
-        @multi = Curl::Multi.new(@paul_feed[:url])
+        @multi = Curl::Multi.new
         @multi.stub!(:add)
         @easy_curl = Curl::Easy.new(@paul_feed[:url])
 
@@ -377,7 +377,7 @@ def self.able_to_parse?(val)
 
     describe "#add_feed_to_multi" do
       before(:each) do
-        @multi = Curl::Multi.new(@paul_feed[:url])
+        @multi = Curl::Multi.new
         @multi.stub!(:add)
         @easy_curl = Curl::Easy.new(@paul_feed[:url])
         @feed = Feedzirra::Feed.parse(sample_feedburner_atom_feed)