Merge pull request #6791 from per1234/remove-KCN_Utility

Remove "KCN_Utility"

Author: MatteoPologruto

registry.txt

@@ -5942,7 +5942,6 @@ https://github.com/nthnn/Anomalia.git|Contributed|Anomalia
 https://github.com/addy123d/I2CDisplayController.git|Contributed|I2CDisplayController
 https://github.com/SequentMicrosystems/Sequent-RTD-Library.git|Contributed|SM_RTD
 https://github.com/SequentMicrosystems/Sequent-4rel4in-Library.git|Contributed|SM_4REL4IN
-https://github.com/KCN-judu/KCN-Utility-Arduino-lib.git|Contributed|KCN_Utility
 https://github.com/nthnn/Navigador.git|Contributed|Navigador
 https://github.com/JoelJojoP/TempReader.git|Contributed|TempReader
 https://github.com/DocBohn/CowPi_stdio.git|Contributed|CowPi_stdio