Don't include autoloaded files in tests

[mbabker]

Summary of Changes

The test environment boots up the autoloader, so there is no need to include autoloaded files in the test classes. Remove extraneous include/require statements.

Testing Instructions

Unit tests pass, merge this.

Documentation Changes Required

N/A

[rdeutz]

I have tested this item ✅ successfully on 79e6359

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[andrepereiradasilva]

I have tested this item ✅ successfully on 79e6359

united tests passed.
"merge this" 😄

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_{This comment was created with the J!Tracker Application at issues.joomla.org/joomla-cms/11693.}

[dgrammatiko]

I have tested this item ✅ successfully on 79e6359

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_{This comment was created with the J!Tracker Application at issues.joomla.org/joomla-cms/11693.}

[dgrammatiko]

RTC @rdeutz go on and hit that button