[processing] Drop unmainted saga provider from QGIS install (Request in QGIS)

[qgis-bot]

Request for documentation

From pull request QGIS/qgis#50834 Author: @nyalldawson QGIS version: 3.30

[processing] Drop unmainted saga provider from QGIS install

PR Description:

This provider has not been maintained and does not work with newer SAGA versions. Users are encouraged to use the 3rd-party "Processing Saga NextGen" plugin instead.

After many many years of discussion, it's time for the inbuilt provider to go!

Commits tagged with [need-docs] or [FEATURE]

[selmaVH1]

Hi @DelazJ does this ticket mean that SAGA should be removed from all sections within processing framework and training manual?

[agiudiceandrea]

@DelazJ @selmaVH1 , I think it should be removed from both the user guide and the training manual.

[selmaVH1]

Thank you @agiudiceandrea.