* net/tramp-compat.el (tramp-compat-delete-file): Use

* net/tramp-compat.el (tramp-compat-delete-file): Use
`symbol-value' for backward compatibility.

* net/tramp.el (tramp-handle-make-symbolic-link)
(tramp-handle-load)
(tramp-do-copy-or-rename-file-via-buffer)
(tramp-do-copy-or-rename-file-directly)
(tramp-do-copy-or-rename-file-out-of-band)
(tramp-handle-process-file, tramp-handle-call-process-region)
(tramp-handle-shell-command, tramp-handle-file-local-copy)
(tramp-handle-insert-file-contents, tramp-handle-write-region)
(tramp-delete-temp-file-function): Use `delete-file' instead
of `tramp-compat-delete-file'.

* net/tramp-fish.el (tramp-fish-handle-delete-directory)
(tramp-fish-handle-make-symbolic-link)
(tramp-fish-handle-process-file): Use `delete-file' instead
of `tramp-compat-delete-file'.

* net/tramp-ftp.el (tramp-ftp-file-name-handler): Use
`delete-file' instead of `tramp-compat-delete-file'.

* net/tramp-gvfs.el (tramp-gvfs-handle-delete-file): Rename arg.
(tramp-gvfs-handle-write-region): Use `delete-file' instead of
`tramp-compat-delete-file'.

* net/tramp-imap.el (tramp-imap-do-copy-or-rename-file): Use
`delete-file' instead of `tramp-compat-delete-file'.

* net/tramp-smb.el (tramp-smb-handle-copy-file)
(tramp-smb-handle-file-local-copy, tramp-smb-handle-rename-file)
(tramp-smb-handle-write-region): Use `delete-file' instead of
`tramp-compat-delete-file'.
(tramp-smb-handle-delete-directory): Use 'trash as arg.