Update badges on README

Author: igorborgest

README.md

@@ -15,9 +15,8 @@ We just released a new major version `1.0` with breaking changes. Please make su
 [![Python Version](https://img.shields.io/badge/python-3.6%20%7C%203.7%20%7C%203.8-brightgreen.svg)](https://anaconda.org/conda-forge/awswrangler)
 [![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)
 [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
-[![Checked with mypy](http://www.mypy-lang.org/static/mypy_badge.svg)](http://mypy-lang.org/)
-[![Average time to resolve an issue](http://isitmaintained.com/badge/resolution/awslabs/aws-data-wrangler.svg)](http://isitmaintained.com/project/awslabs/aws-data-wrangler "Average time to resolve an issue")
 
+[![Checked with mypy](http://www.mypy-lang.org/static/mypy_badge.svg)](http://mypy-lang.org/)
 [![Coverage](https://img.shields.io/badge/coverage-100%25-brightgreen.svg)](https://pypi.org/project/awswrangler/)
 ![Static Checking](https://github.com/awslabs/aws-data-wrangler/workflows/Static%20Checking/badge.svg?branch=master)
 [![Documentation Status](https://readthedocs.org/projects/aws-data-wrangler/badge/?version=latest)](https://aws-data-wrangler.readthedocs.io/?badge=latest)