[5.1] Unused imports

[Denitz]

Summary of Changes

Remove unused PHP imports.

Testing Instructions

Apply patch.

Actual result BEFORE applying this Pull Request

Unused imports, see IDE warnings.

Expected result AFTER applying this Pull Request

No unused imports.

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:

• No documentation changes for manual.joomla.org needed

[laoneo]

I'm wondering why the CS fixer is not detecting that one.

[alikon]

should be nice to have this check/fix in the pipeline
🍹

[HLeithner]

This pull request has been automatically rebased to 5.1-dev.

[rdeutz]

LGTM, code review and checking a few files if it is correct

[Quy]

I have tested this item ✅ successfully on 0b1fb2c

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_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/41980.}

[viocassel]

I have tested this item ✅ successfully on 0b1fb2c

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_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/41980.}

[richard67]

RTC

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_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/41980.}

[bembelimen]

Thx