Merge pull request #3597 from fujimotos/sf/readme

Removing obsolete paragraphs in README.md

README.md

@@ -1,34 +1,19 @@
 Fluentd: Open-Source Log Collector
 ===================================
-GitHub Actions:
 
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-[![pipeline status](https://cloud.drone.io/api/badges/fluent/fluentd/status.svg?branch=master)](https://cloud.drone.io/fluent/fluentd)
 
 [Fluentd](https://www.fluentd.org/) collects events from various data sources and writes them to files, RDBMS, NoSQL, IaaS, SaaS, Hadoop and so on. Fluentd helps you unify your logging infrastructure (Learn more about the [Unified Logging Layer](https://www.fluentd.org/blog/unified-logging-layer)).
 
 <p align="center">
 <img src="https://www.fluentd.org/images/fluentd-architecture.png" width="500px"/>
 </p>
 
-An event consists of *tag*, *time* and *record*. Tag is a string separated with '.' (e.g. myapp.access). It is used to categorize events. Time is a UNIX time recorded at occurrence of an event. Record is a JSON object.
-
-## Example Use Cases
-
-Use Case | Description | Diagram
--------- | ------------|:---------:
-Centralizing Apache/Nginx Server Logs | Fluentd can be used to tail access/error logs and transport them reliably to remote systems. | <img src="https://www.fluentd.org/images/recipes/elasticsearch-s3-fluentd.png" height="150"/>
-Syslog Alerting | Fluentd can "grep" for events and send out alerts. | <img src="https://www.fluentd.org/images/syslog-fluentd-alert.png" height="100"/>
-Mobile/Web Application Logging | Fluentd can function as middleware to enable asynchronous, scalable logging for user action events. | <img src="https://www.fluentd.org/images/datasources/asynchronous_logging.png" height="150"/>
-
 ## Quick Start
 
     $ gem install fluentd
@@ -66,12 +51,6 @@ You can run specified test via `TEST` environment variable:
     $ bundle exec rake test TEST=test/test_specified_path.rb
     $ bundle exec rake test TEST=test/test_*.rb
 
-## Fluentd UI: Admin GUI
-
-[Fluentd UI](https://github.com/fluent/fluentd-ui) is a graphical user interface to start/stop/configure Fluentd.
-
-<p align="center"><img width="500" src="https://www.fluentd.org/images/blog/fluentd-ui.gif"/></p>
-
 ## More Information
 
 - Website: https://www.fluentd.org/