[DOCS] Remove unused files in Documentation folder

* .gitignore files contain files that are not
  created during rendering
* .editorconfig conatains old styling, there is a
  main .editorconfig with the containing the correct
  styling

Resolves: #103352
Releases: main, 12.4, 11.5
Change-Id: Ic3189d5f10b8e6f8aa8903cd0924a4a4b4fab191
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/83414


Reviewed-by: Lina Wolf <112@linawolf.de>
Tested-by: Lina Wolf <112@linawolf.de>
Tested-by: core-ci <typo3@b13.com>

typo3/sysext/felogin/Documentation/.gitignore

-# this is file .gitignore
-
-# ignore everything in this directory
-_make/*
-
-# but do not ignore this file
-!_not_versioned/.gitignore

typo3/sysext/indexed_search/Documentation/.gitignore

-# this is file .gitignore
-
-# ignore everything in this directory
-_make/*
-
-# but do not ignore this file
-!_not_versioned/.gitignore

typo3/sysext/linkvalidator/Documentation/.gitignore

-# this is file .gitignore
-
-# ignore everything in this directory
-_make/*
-
-# but do not ignore this file
-!_not_versioned/.gitignore

typo3/sysext/recycler/Documentation/.gitignore

-# this is file .gitignore
-
-# ignore everything in this directory
-_make/*
-
-# but do not ignore this file
-!_not_versioned/.gitignore

typo3/sysext/rte_ckeditor/Documentation/.editorconfig

-# EditorConfig is awesome: http://EditorConfig.org
-#
-# Use as main: https://github.com/TYPO3-Documentation/T3DocTeam/blob/main/.editorconfig
-
-# top-most EditorConfig file
-root = false
-
-[{*.rst,*.rst.txt}]
-charset = utf-8
-end_of_line = lf
-insert_final_newline = true
-trim_trailing_whitespace = true
-indent_style = space
-indent_size = 3
-
-# MD-Files
-[*.md]
-charset = utf-8
-end_of_line = lf
-insert_final_newline = true
-trim_trailing_whitespace = true
-indent_style = space
-indent_size = 4

typo3/sysext/scheduler/Documentation/.gitignore

-# this is file .gitignore
-
-# ignore everything in this directory
-_make/*
-
-# but do not ignore this file
-!_not_versioned/.gitignore

typo3/sysext/workspaces/Documentation/.gitignore

-# this is file .gitignore
-
-# ignore everything in this directory
-_make/*
-
-# but do not ignore this file
-!_not_versioned/.gitignore