Delete unused button bitmaps

aegisub/src/bitmaps/manifest.respack

@@ -171,41 +171,6 @@ button/button_strikeout_24.png
 button/button_strikeout_32.png
 button/button_strikeout_48.png
 button/button_strikeout_64.png
-button/button_track_move_16.png
-button/button_track_move_24.png
-button/button_track_move_32.png
-button/button_track_move_48.png
-button/button_track_move_64.png
-button/button_track_movement_16.png
-button/button_track_movement_24.png
-button/button_track_movement_32.png
-button/button_track_movement_48.png
-button/button_track_movement_64.png
-button/button_track_point_add_16.png
-button/button_track_point_add_24.png
-button/button_track_point_add_32.png
-button/button_track_point_add_48.png
-button/button_track_point_add_64.png
-button/button_track_point_del_16.png
-button/button_track_point_del_24.png
-button/button_track_point_del_32.png
-button/button_track_point_del_48.png
-button/button_track_point_del_64.png
-button/button_track_points_16.png
-button/button_track_points_24.png
-button/button_track_points_32.png
-button/button_track_points_48.png
-button/button_track_points_64.png
-button/button_track_split_line_16.png
-button/button_track_split_line_24.png
-button/button_track_split_line_32.png
-button/button_track_split_line_48.png
-button/button_track_split_line_64.png
-button/button_track_trail_16.png
-button/button_track_trail_24.png
-button/button_track_trail_32.png
-button/button_track_trail_48.png
-button/button_track_trail_64.png
 button/button_underline_16.png
 button/button_underline_24.png
 button/button_underline_32.png
@@ -291,11 +256,6 @@ button/forums_button_24.png
 button/forums_button_32.png
 button/forums_button_48.png
 button/forums_button_64.png
-button/hotkeys_button_16.png
-button/hotkeys_button_24.png
-button/hotkeys_button_32.png
-button/hotkeys_button_48.png
-button/hotkeys_button_64.png
 button/irc_button_16.png
 button/irc_button_24.png
 button/irc_button_32.png
@@ -306,11 +266,6 @@ button/jumpto_button_24.png
 button/jumpto_button_32.png
 button/jumpto_button_48.png
 button/jumpto_button_64.png
-button/kara_join_16.png
-button/kara_join_24.png
-button/kara_join_32.png
-button/kara_join_48.png
-button/kara_join_64.png
 button/kara_mode_16.png
 button/kara_mode_24.png
 button/kara_mode_32.png
@@ -341,11 +296,6 @@ button/languages_menu_24.png
 button/languages_menu_32.png
 button/languages_menu_48.png
 button/languages_menu_64.png
-button/menu_check_16.png
-button/menu_check_24.png
-button/menu_check_32.png
-button/menu_check_48.png
-button/menu_check_64.png
 button/new_toolbutton_16.png
 button/new_toolbutton_24.png
 button/new_toolbutton_32.png
@@ -396,11 +346,6 @@ button/options_button_24.png
 button/options_button_32.png
 button/options_button_48.png
 button/options_button_64.png
-button/override_aspect_menu_16.png
-button/override_aspect_menu_24.png
-button/override_aspect_menu_32.png
-button/override_aspect_menu_48.png
-button/override_aspect_menu_64.png
 button/paste_button_16.png
 button/paste_button_24.png
 button/paste_button_32.png
@@ -451,11 +396,6 @@ button/select_visible_button_24.png
 button/select_visible_button_32.png
 button/select_visible_button_48.png
 button/select_visible_button_64.png
-button/set_zoom_menu_16.png
-button/set_zoom_menu_24.png
-button/set_zoom_menu_32.png
-button/set_zoom_menu_48.png
-button/set_zoom_menu_64.png
 button/shift_times_toolbutton_16.png
 button/shift_times_toolbutton_24.png
 button/shift_times_toolbutton_32.png
@@ -466,11 +406,6 @@ button/shift_to_frame_24.png
 button/shift_to_frame_32.png
 button/shift_to_frame_48.png
 button/shift_to_frame_64.png
-button/show_overscan_menu_checked_16.png
-button/show_overscan_menu_checked_24.png
-button/show_overscan_menu_checked_32.png
-button/show_overscan_menu_checked_48.png
-button/show_overscan_menu_checked_64.png
 button/show_video_details_menu_16.png
 button/show_video_details_menu_24.png
 button/show_video_details_menu_32.png
@@ -481,11 +416,6 @@ button/snap_subs_to_scene_24.png
 button/snap_subs_to_scene_32.png
 button/snap_subs_to_scene_48.png
 button/snap_subs_to_scene_64.png
-button/sort_times_button_16.png
-button/sort_times_button_24.png
-button/sort_times_button_32.png
-button/sort_times_button_48.png
-button/sort_times_button_64.png
 button/spellcheck_toolbutton_16.png
 button/spellcheck_toolbutton_24.png
 button/spellcheck_toolbutton_32.png
@@ -546,11 +476,6 @@ button/toggle_audio_spectrum_24.png
 button/toggle_audio_spectrum_32.png
 button/toggle_audio_spectrum_48.png
 button/toggle_audio_spectrum_64.png
-button/toggle_audio_ssa_16.png
-button/toggle_audio_ssa_24.png
-button/toggle_audio_ssa_32.png
-button/toggle_audio_ssa_48.png
-button/toggle_audio_ssa_64.png
 button/toggle_tag_hiding_16.png
 button/toggle_tag_hiding_24.png
 button/toggle_tag_hiding_32.png
@@ -611,11 +536,6 @@ button/visual_move_conv_pos_24.png
 button/visual_move_conv_pos_32.png
 button/visual_move_conv_pos_48.png
 button/visual_move_conv_pos_64.png
-button/visual_realtime_16.png
-button/visual_realtime_24.png
-button/visual_realtime_32.png
-button/visual_realtime_48.png
-button/visual_realtime_64.png
 button/visual_rotatexy_16.png
 button/visual_rotatexy_24.png
 button/visual_rotatexy_32.png