remove old repos file

repos/nix.repos

@@ -1,30 +0,0 @@
-repositories:
-  rbs_arm:
-    type: git
-    url: https://github.com/solid-sinusoid/rbs-arm.git
-    version: main
-  robot_builder:
-    type: git
-    url: https://github.com/solid-sinusoid/robot-builder.git
-    version: main
-  behavior_tree:
-    type: git
-    url: https://github.com/BehaviorTree/BehaviorTree.ROS2.git
-    version: humble
-  robot_builder:
-    type: git
-    url: https://github.com/solid-sinusoid/robot-builder.git
-    version: main
-  cartesian_controllers:
-    type: git
-    url: https://github.com/solid-sinusoid/cartesian_controllers.git
-    version: gazebo-simulation
-# temporal debug repositories with nix
-  scenario:
-    type: git
-    url: https://seed.solid-sinusoid.com/z3RBwHLb4j66Q12dwkK1RGQj3ufhi.git
-    version: patches/740e5c2c969c54c0779f9511b1b1d6257fff547f
-  gym-gz:
-    type: git
-    url: https://seed.solid-sinusoid.com/z33HXHSaU12N1tEgJCWJpB58w4KR.git
-    version: patches/82421599d3f30768e20f24d24eff270643956584