don't require json on testing route

inventory_provider/routes/testing.py

@@ -5,7 +5,6 @@ routes = Blueprint("inventory-data-testing-support-routes", __name__)
 
 
 @routes.route("/flushdb", methods=['GET', 'POST'])
-@common.require_accepts_json
 def flushdb():
     common.get_redis().flushdb()
     return Response('OK')

test/test_testing_routes.py

-import json
-import jsonschema
-
-DEFAULT_REQUEST_HEADERS = {
-    "Content-type": "application/json",
-    "Accept": ["application/json"]
-}
-
 
 def test_flushdb(client):
-    rv = client.post(
-        "/testing/flushdb",
-        headers=DEFAULT_REQUEST_HEADERS)
+    rv = client.post("/testing/flushdb")
     assert rv.status_code == 200