Remove "DSpotterSDK_Maker_PortentaH7"

Author: per1234

repositories.txt

@@ -5554,6 +5554,5 @@ https://github.com/Beirdo/Arduino-FRAM-Cache
 https://github.com/mission-mangal/SpeedControl
 https://github.com/mission-mangal/PositionControl
 https://github.com/maximemoreillon/iot-kernel
-https://github.com/CyberonEBU/Cyberon_DSpotterSDK_Maker_PortentaH7
 https://github.com/kimble4/CrossMgrLapCounter
 https://github.com/plasmapper/adxl355-arduino