[3.12] Remove Sphinx problem matcher to avoid annotating unchanged files (GH-108005) (#108049)

Remove Sphinx problem matcher to avoid annotating unchanged files (GH-108005)
(cherry picked from commit 0d7f5d3ba3641f8c7d32facbb177bf70ee7520d1)

Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>