The QDoc command `\tableofcontents` was rendered useless by a change
more than a decade ago. Remove the use of `\tableofcontents` as it
serves no purpose, and ensure that the surrounding context still makes
sense for the reader, by removing preceding text that refers to a
non-existing table of contents, such as `Contents:`.
Task-number: QTBUG-128173
Change-Id: Ibb5a6af0e80f70fa487cdf6a7e38009a9ef60cbf
Reviewed-by: Safiyyah Moosa <safiyyah.moosa@qt.io>
Reviewed-by: Venugopal Shivashankar <Venugopal.Shivashankar@qt.io>
(cherry picked from commit cd8244131e2d6fe2c2453ae40213e7f12bff893d)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
4cef74fe76