nuked playstation joyinterface submodule

Author: KKalem

.gitmodules

@@ -52,7 +52,3 @@
 [submodule "utilities/serial_ping_pkg"]
 	path = utilities/serial_ping_pkg
 	url = https://github.com/NinjaTuna007/serial_ping_pkg.git
-[submodule "external_equipment/PlayStation-JoyInterface-ROS2"]
-	path = external_equipment/PlayStation-JoyInterface-ROS2
-	url = https://github.com/HarvestX/PlayStation-JoyInterface-ROS2
-	branch = humble