Removed bogus line in repos file

Author: esteve

ros2_rust_foxy.repos

@@ -3,7 +3,6 @@ repositories:
     type: git
     url: https://github.com/ros2/common_interfaces.git
     version: foxy
-    https://github.com/ros2/example_interfaces.git
   ros2/example_interfaces:
     type: git
     url: https://github.com/ros2/example_interfaces.git