remove unused unittest

tests/data/test_bugfix.yml

@@ -1,16 +1,6 @@
 - config:
     name: "bugfix testcases."
-    request:
-        base_url: http://127.0.0.1:5000
-        headers:
-            Content-Type: application/json
-
-- test:
-    name: get headers from config
-    request:
-        url: /api/users/1000
-        method: GET
-        headers:
+    base_url: http://127.0.0.1:5000
 
 - test:
     name: bugfix type_match #84