message: Remove Codecov badge
diff: [![Maintainability](https://api.codeclimate.com/v1/badges/4f02368ebeb7be1490bb/maintainability)](https://codeclimate.com/github/vscode-icons/vscode-icons/maintainability)
  [![Test Coverage](https://api.codeclimate.com/v1/badges/4f02368ebeb7be1490bb/test_coverage)](https://codeclimate.com/github/vscode-icons/vscode-icons/test_coverage)
  -[![codecov](https://codecov.io/gh/vscode-icons/vscode-icons/branch/master/graph/badge.svg)](https://codecov.io/gh/vscode-icons/vscode-icons)
  [![Known Vulnerabilities](https://snyk.io/test/github/vscode-icons/vscode-icons/badge.svg)](https://snyk.io/test/github/vscode-icons/vscode-icons)
  [![Average time to resolve an issue](https://isitmaintained.com/badge/resolution/vscode-icons/vscode-icons.svg)](https://isitmaintained.com/project/vscode-icons/vscode-icons "Average time to resolve an issue")
  