Clean up README.md by removing redundant badges

Removed duplicate downloads badge and extra line breaks.

Author: jayeshmepani

README.md

@@ -2,18 +2,10 @@
 
 
 [![PyPI version](https://img.shields.io/pypi/v/postalkit.svg?style=flat-square)](https://pypi.org/project/postalkit/) 
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 [![Downloads](https://static.pepy.tech/badge/postalkit)](https://pepy.tech/projects/postalkit) 
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-[![Downloads](https://img.shields.io/endpoint?url=https://pepy.tech/badge/postalkit)](https://pepy.tech/projects/postalkit) 
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 [![Python Versions](https://img.shields.io/pypi/pyversions/postalkit.svg?style=flat-square)](https://pypi.org/project/postalkit/) 
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 [![License: MIT](https://img.shields.io/badge/license-MIT-blue.svg?style=flat-square)](https://opensource.org/licenses/MIT) 
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 [![Wheel](https://img.shields.io/pypi/wheel/postalkit?style=flat-square)](https://pypi.org/project/postalkit/) 
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 [![Status](https://img.shields.io/pypi/status/postalkit?style=flat-square)](https://pypi.org/project/postalkit/)