Removed test badge

Author: stefanak-michal

README.md

@@ -2,7 +2,6 @@
 
 This library contains wrapper class to cover basic functionality with [Bolt library](https://github.com/neo4j-php/Bolt).
 
-![DB Tests PHP7](https://github.com/neo4j-php/Bolt/actions/workflows/db-test-php-7.yml/badge.svg?branch=master)
 ![DB Tests PHP8](https://github.com/neo4j-php/Bolt/actions/workflows/db-test-php-8.yml/badge.svg?branch=master)
 
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