[TASK] Remove dummy files from various extensions

Affected extensions: extra_page_cm_options, feedit, func_wizards,
impexp, lang, lowlevel, reports

Change-Id: I5f2a232d0fc27b66c3c1efbd6258a1055366ed14
Resolves: #47793
Related: #47756
Releases: 6.2
Reviewed-on: https://review.typo3.org/20383
Reviewed-by: Anja Leichsenring
Tested-by: Anja Leichsenring
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn