red warning whenever you start your device if you've unlocked your bootloader !!!!

Please can anybody help me with this after unlocking the bootloader i have now a red message on th screen [THIS BUILD IS FOR DEVELOPMENT PURPOSES ONLY. DO NOT DISTRIBUTE OUTSIDE OF HTC WITHOUT HTC'S WRITTEN PERMISSION. FAILURE TO COMPLY MAY LEAD TO LEGAL ACTION.]
Please help and thanks
M'y phone htc desire 820n single sim

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