Remove unused variables.

test/integration/http_client_test.rb

@@ -14,12 +14,12 @@ class HttpClientTest < Test::Unit::TestCase
   def test_http_basic_auth
     Geocoder.configure(lookup: :geocoder_us, api_key: @api_keys["geocoder_us"])
     results = Geocoder.search "27701"
-    assert_not_nil (r = results.first)
+    assert_not_nil results.first
   end
 
   def test_ssl
     Geocoder.configure(lookup: :esri, use_https: true)
     results = Geocoder.search "27701"
-    assert_not_nil (r = results.first)
+    assert_not_nil results.first
   end
 end