Update repositories.txt

Author: adrian2793

repositories.txt

@@ -6440,5 +6440,4 @@ https://github.com/skyfroger/RLab
 https://github.com/Frai13/EasIno
 https://github.com/GreenLeafLocal/HydroinoJobMgr
 https://github.com/dev-board-tech/lvglCpp
-https://github.com/Arduino-Library-Collection/DC-Motor-Engine-Control
 https://github.com/Arduino-Library-Collection/Engine-Control