Rework the precision metric. (#9222)

- Rework the precision metric for both CPU and GPU.
- Mention it in the document.
- Cleanup old support code for GPU ranking metric.
- Deterministic GPU implementation.

* Drop support for classification.

* type.

* use batch shape.

* lint.

* cpu build.

* cpu build.

* lint.

* Tests.

* Fix.

* Cleanup error message.

tests/ci_build/lint_python.py

@@ -90,7 +90,7 @@ def check_cmd_print_failure_assistance(cmd: List[str]) -> bool:
 
     subprocess.run([cmd[0], "--version"])
     msg = """
-Please run the following command on your machine to address the formatting error:
+Please run the following command on your machine to address the error:
 
     """
     msg += " ".join(cmd)