fix: remove duplicate ruff entry from Code Linters section (vinta#3119)

Author: AG141293

README.md

@@ -612,7 +612,6 @@ _Tools of static analysis, linters and code quality checkers. Also see [awesome-
   - [flake8](https://github.com/PyCQA/flake8) - A wrapper around `pycodestyle`, `pyflakes` and McCabe.
     - [awesome-flake8-extensions](https://github.com/DmytroLitvinov/awesome-flake8-extensions)
   - [pylint](https://github.com/pylint-dev/pylint) - A fully customizable source code analyzer.
-  - [ruff](https://github.com/astral-sh/ruff) - An extremely fast Python linter and code formatter.
 - Code Formatters
   - [black](https://github.com/psf/black) - The uncompromising Python code formatter.
   - [isort](https://github.com/PyCQA/isort) - A Python utility / library to sort imports.