QG4/CentOS.md

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# Running QGC on CentOS 7

This information has moved to the [QGroundControl Developer Guide](https://dev.qgroundcontrol.com/en/getting_started/CentOS.html).
Improve CentOS instructions 6 years ago			`# Running QGC on CentOS 7`
CentOS Build Instructions 6 years ago
Redirect CentOS docs to devguide 6 years ago			`This information has moved to the [QGroundControl Developer Guide](https://dev.qgroundcontrol.com/en/getting_started/CentOS.html).`