Remove unused icons

novelwriter/assets/icons/typicons_dark/icons.conf

@@ -21,7 +21,6 @@ backward        = typ_chevron-left.svg
 bullet-off      = typ_media-record-outline.svg
 bullet-on       = typ_media-record.svg
 check           = typ_tick.svg
-clear           = typ_backspace.svg
 close           = typ_times.svg
 cls_archive     = typ_delete.svg
 cls_character   = typ_user.svg
@@ -35,17 +34,14 @@ cls_timeline    = typ_calendar.svg
 cls_trash       = typ_trash.svg
 cls_world       = typ_location.svg
 cross           = typ_times.svg
-delete          = typ_delete.svg
 doc_h0          = mixed_heading0.svg
 doc_h1          = mixed_heading1.svg
 doc_h2          = mixed_heading2.svg
 doc_h3          = mixed_heading3.svg
 doc_h4          = mixed_heading4.svg
-done            = typ_input-checked.svg
 down            = typ_chevron-down.svg
 edit            = typ_pencil.svg
 forward         = typ_chevron-right.svg
-hash            = typ_hash.svg
 maximise        = typ_arrow-maximise.svg
 menu            = typ_th-menu.svg
 minimise        = typ_arrow-minimise.svg
@@ -60,7 +56,6 @@ proj_title      = mixed_document-title.svg
 reference       = typ_at.svg
 refresh         = typ_refresh.svg
 remove          = typ_minus.svg
-save            = typ_download.svg
 search          = typ_search.svg
 search_cancel   = typ_cancel-grey.svg
 search_case     = nw_search-case.svg