fix ruff complaint that I caused, and edit printout because you could get it if you ran -v and so I rather limit it now to the exact functionality involved

Author: StephanieKemna

src/trafficgen/cli.py

@@ -160,9 +160,10 @@ def gen_situation(
     else:
         click.echo(
             "No output folder specified, not writing traffic situations to files.\n"
-            "You can use -v to visualize them or -o to specify the output folder."
+            "You can use -o to specify the output folder."
         )
 
+
 main.add_command(gen_situation)
 
 if __name__ == "__main__":