[6.0] Remove deprecated none namespaced helpers

[laoneo]

Summary of Changes

Remove deprecated none namespaced helper classes. They are obsolete since 4.0 and it is really recommended to use the namespaced ones instead.

Testing Instructions

Install test sample data and browse around the front end and back end.

Actual result BEFORE applying this Pull Request

All is working.

Expected result AFTER applying this Pull Request

All is working.

Link to documentations

Please select:

• Documentation link for docs.joomla.org:

• No documentation changes for docs.joomla.org needed

• Pull Request link for manual.joomla.org: Add removed helper files Manual#440

• No documentation changes for manual.joomla.org needed

[exlemor]

Hi @laoneo, did I mis-understand this test?

When I tried to use the Patch Tester with this PR (and perhaps that is where my mistake was), I got an error message:

The file marked for modification does not exist: ruleset.xml

(if I am supposed to download one of the pre-built packages, I will)

[laoneo]

The ruleset file is not part of the installation package, that's probably the reason for the error.

[exlemor]

The ruleset file is not part of the installation package, that's probably the reason for the error.

ok so sorry, since it doesn't let me install the Patch, does that mean I need to use the prebuilt package to test this PR or do you need to update the PR?

[brianteeman]

You wont be able to test this with anything other than a git checkout as ruleset is not part of a built/distributed package

[exlemor]

You wont be able to test this with anything other than a git checkout as ruleset is not part of a built/distributed package

Thanks @brianteeman for the explanation.