fix Ruff errors

rendercv/__main__.py

@@ -54,7 +54,7 @@ def new(name: Annotated[str, typer.Argument(help="Full name")]):
         environment.variable_start_string = "<<"
         environment.variable_end_string = ">>"
 
-        template = environment.get_template(f"new_input.yaml.j2")
+        template = environment.get_template("new_input.yaml.j2")
         new_input_file = template.render(name=name)
 
         name = name.replace(" ", "_")

tests/test_cli.py

@@ -1,7 +1,5 @@
 import unittest
 import os
-import json
-from datetime import date
 import shutil
 import subprocess
 import sys

tests/test_rendering.py

@@ -3,8 +3,6 @@ import os
 import json
 from datetime import date
 import shutil
-import subprocess
-import sys
 
 from rendercv import rendering, data_model