healthcheck shows warnings from call to deprecated health reporting api

[gongfarmer]

Running :checkhealth diffview shows multiple warnings for several weeks now.

The actual output for me is reproduced below. I would expect to see this same output but without all the WARNING lines.

==============================================================================
diffview: require("diffview.health").check()

- WARNING vim.health.report_start() is deprecated, use vim.health.start() instead. :help |deprecated|
  This feature will be removed in Nvim version 0.11

Checking plugin dependencies ~
- WARNING vim.health.report_ok() is deprecated, use vim.health.ok() instead. :help |deprecated|
  This feature will be removed in Nvim version 0.11
- OK nvim-web-devicons installed.

Checking VCS tools ~
- WARNING vim.health.report_info() is deprecated, use vim.health.info() instead. :help |deprecated|
  This feature will be removed in Nvim version 0.11
- The plugin requires at least one of the supported VCS tools to be valid.
- OK Git found.
- WARNING vim.health.report_warn() is deprecated, use vim.health.warn() instead. :help |deprecated|
  This feature will be removed in Nvim version 0.11
- WARNING Git version is outdated! Some functionality might not work as expected, or not at all! Current: 2.30.2, wanted: 2.31.0
- WARNING Configured `hg_cmd` is not executable: 'hg'
- WARNING vim.health.report_error() is deprecated, use vim.health.error() instead. :help |deprecated|
  This feature will be removed in Nvim version 0.11
- ERROR No valid VCS tool was found!

[sindrets]

The remarks about inaction are unnecessary. These functions have only been soft deprecated in nightly. They're not deprecated in any stable release, and nobody has reported it until now.