Update README.md

Author: eadwinCode

README.md

@@ -33,10 +33,6 @@ Plus **Extra**:
 - pydantic >= 1.6 
 - Django-Ninja >= 0.16.1
 
-## Django-Ninja Benchmark
-**Django-Ninja-Extra** uses **Django-Ninja** under the hood, it can be assumed that Django-Ninja-Extra has the same benchmark with Django-Ninja
-![Django Ninja REST Framework](docs/docs/images/benchmark.png)
-
 Full documentation, [visit](https://eadwincode.github.io/django-ninja-extra/).
 
 ## Example