chore: drop ext. sto. file enc. from troubleshooting chapter (moved)

Signed-off-by: Josh <[email protected]>

Author: joshtrichards

admin_manual/issues/general_troubleshooting.rst

@@ -341,33 +341,6 @@ Users' Federated Cloud IDs not updated after a domain name change
 | ``occ dav:sync-system-addressbook``
 | ``occ federation:sync-addressbooks``
 
-.. _trouble-file-encoding-ext-storages:
-
-Troubleshooting file encoding on external storages
---------------------------------------------------
-
-When using external storage, it can happen that some files with special characters will not
-appear in the file listing, or they will appear and not be accessible.
-
-When this happens, please run the :ref:`files scanner<occ_files_scan_label>`, for example with::
-
-  sudo -E -u www-data php occ files:scan --all
-
-If the scanner tells about an encoding issue on the affected file, please enable Mac encoding compatibility in the :ref:`mount options<external_storage_mount_options_label>`
-and then :ref:`rescan the external storage<occ_files_scan_label>`.
-
-.. note::
-   This mode comes with a performance impact because Nextcloud will always try both encodings when detecting files
-   on external storages.
-
-   Mac computers are using the NFD Unicode Normalization for file names which is different than NFC, the one used
-   by other operating systems. Mac users might upload files directly to the external storage using NFD normalized
-   file names. When uploading through Nextcloud, file names will always be normalized to the NFC standard for consistency.
-
-   It is recommended to let Nextcloud use external storages exclusively to avoid such issues.
-
-   See also `technical explanation about NFC vs NFD normalizations <https://www.win.tue.nl/~aeb/linux/uc/nfc_vs_nfd.html>`_.
-
 Troubleshooting contacts & calendar
 -----------------------------------