remove importlib-metadata (#917)

Signed-off-by: Michael Carlstrom <[email protected]>

Author: InvincibleRMC

rosidl_cli/package.xml

@@ -18,7 +18,6 @@
   <author email="[email protected]">Michel Hidalgo</author>
 
   <exec_depend>python3-argcomplete</exec_depend>
-  <exec_depend>python3-importlib-metadata</exec_depend>
 
   <test_depend>ament_copyright</test_depend>
   <test_depend>ament_flake8</test_depend>