Remove unnecessary flags from --check test (#2708)

* Remove unnecessary flags from --check test

* docs: update CLI reference documentation

🤖 Generated by GitHub Actions

---------

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: koxudaxi

docs/cli-reference/general-options.md

@@ -1168,14 +1168,12 @@ The `--check` flag compares the generated output with existing files and exits w
 a non-zero status if they differ. Useful for CI/CD validation to ensure schemas
 and generated code stay in sync. Works with both single files and directory outputs.
 
-**Related:** [`--no-use-standard-collections`](typing-customization.md#no-use-standard-collections), [`--no-use-union-operator`](typing-customization.md#no-use-union-operator)
-
 **See also:** [CI/CD Integration](../ci-cd.md)
 
 !!! tip "Usage"
 
     ```bash
-    datamodel-codegen --input schema.json --disable-timestamp --use-union-operator --use-standard-collections --check # (1)!
+    datamodel-codegen --input schema.json --disable-timestamp --check # (1)!
     ```
 
     1. :material-arrow-left: `--check` - the option documented here

tests/main/test_main_general.py

@@ -473,9 +473,8 @@ def test_skip_root_model_command_line(output_file: Path) -> None:
 @pytest.mark.cli_doc(
     options=["--check"],
     input_schema="jsonschema/person.json",
-    cli_args=["--disable-timestamp", "--use-union-operator", "--use-standard-collections", "--check"],
+    cli_args=["--disable-timestamp", "--check"],
     golden_output="person.py",
-    related_options=["--use-union-operator", "--use-standard-collections"],
 )
 def test_check_file_matches(output_file: Path) -> None:
     """Verify generated code matches existing output without modifying files.
@@ -489,13 +488,13 @@ def test_check_file_matches(output_file: Path) -> None:
         input_path=input_path,
         output_path=output_file,
         input_file_type="jsonschema",
-        extra_args=["--disable-timestamp", "--use-union-operator", "--use-standard-collections"],
+        extra_args=["--disable-timestamp"],
     )
     run_main_and_assert(
         input_path=input_path,
         output_path=output_file,
         input_file_type="jsonschema",
-        extra_args=["--disable-timestamp", "--use-union-operator", "--use-standard-collections", "--check"],
+        extra_args=["--disable-timestamp", "--check"],
         expected_exit=Exit.OK,
     )