Removed the 7.4.0 deprecation section

Author: ezimuel

README.md

@@ -10,8 +10,6 @@ To maintain consistency across all the low-level clients (Ruby, Python, etc.), c
 
 Starting from version 7.4.0, all the endpoints (and namespaces) are autogenerated using the [util/GenerateEndpoints.php](https://github.com/elastic/elasticsearch-php/blob/master/util/GenerateEndpoints.php) script. This script reads the [Elasticsearch API specs](https://github.com/elastic/elasticsearch/tree/master/rest-api-spec/src/main/resources/rest-api-spec/api) and generated the PHP classes for all the endpoints.
 
-Moreover from version 7.4.0, we added a `E_USER_DEPRECATED` notice if you use deprecated parameters for Elasticsearch.
-
 Features
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