delete test that become redunant

tests/test_utils_showmodels.py

@@ -1,11 +0,0 @@
-from typer.testing import CliRunner
-
-from manage_fastapi.main import app
-
-runner = CliRunner()
-
-
-# TODO add more tests
-def test_showmodels():
-    result = runner.invoke(app, ["showmodels"])
-    assert result.exit_code == 0