UI: Remove unused menu icon resources

Drop the PNG resources that were only used for menu action icons.
Keep the app icons and directory listing icons that still have direct
resource references, and stop copying the now-empty browser icon set.

UI/cmake/ResourceFiles.cmake

@@ -5,43 +5,9 @@ set(FONTS
 list(TRANSFORM FONTS PREPEND "${LADYBIRD_SOURCE_DIR}/Base/res/fonts/")
 
 set(16x16_ICONS
-    app-system-monitor.png
-    box.png
-    audio-volume-high.png
-    audio-volume-muted.png
-    close-tab.png
-    download.png
-    edit-copy.png
-    edit-cut.png
-    error.png
-    filetype-css.png
-    filetype-folder-open.png
-    filetype-html.png
-    filetype-image.png
-    filetype-sound.png
-    filetype-video.png
-    find.png
-    fullscreen.png
-    go-forward.png
-    history.png
-    layers.png
-    layout.png
-    network.png
-    new-tab.png
     open-parent-directory.png
-    paste.png
-    pause.png
-    play.png
-    select-all.png
-    settings.png
-    spoof.png
-    trash-can.png
-    zoom-in.png
-    zoom-out.png
-    zoom-reset.png
 )
 set(32x32_ICONS
-    app-system-monitor.png
     filetype-folder.png
     filetype-unknown.png
 )
@@ -52,16 +18,10 @@ set(128x128_ICONS
     app-browser.png
     app-browser-dark.png
 )
-set(BROWSER_ICONS
-    cookie.png
-    dom-tree.png
-    local-storage.png
-)
 list(TRANSFORM 16x16_ICONS PREPEND "${LADYBIRD_SOURCE_DIR}/Base/res/icons/16x16/")
 list(TRANSFORM 32x32_ICONS PREPEND "${LADYBIRD_SOURCE_DIR}/Base/res/icons/32x32/")
 list(TRANSFORM 48x48_ICONS PREPEND "${LADYBIRD_SOURCE_DIR}/Base/res/icons/48x48/")
 list(TRANSFORM 128x128_ICONS PREPEND "${LADYBIRD_SOURCE_DIR}/Base/res/icons/128x128/")
-list(TRANSFORM BROWSER_ICONS PREPEND "${LADYBIRD_SOURCE_DIR}/Base/res/icons/browser/")
 
 set(INTERNAL_RESOURCES
     ladybird.css
@@ -191,10 +151,6 @@ function(copy_resources_to_build base_directory bundle_target)
         DESTINATION ${base_directory} TARGET ${bundle_target}
     )
 
-    copy_resource_set(icons/browser RESOURCES ${BROWSER_ICONS}
-        DESTINATION ${base_directory} TARGET ${bundle_target}
-    )
-
     copy_resource_set(themes RESOURCES ${THEMES}
         DESTINATION ${base_directory} TARGET ${bundle_target}
     )
@@ -246,7 +202,6 @@ function(install_ladybird_resources destination component)
     install(FILES ${32x32_ICONS} DESTINATION "${destination}/icons/32x32" COMPONENT ${component})
     install(FILES ${48x48_ICONS} DESTINATION "${destination}/icons/48x48" COMPONENT ${component})
     install(FILES ${128x128_ICONS} DESTINATION "${destination}/icons/128x128" COMPONENT ${component})
-    install(FILES ${BROWSER_ICONS} DESTINATION "${destination}/icons/browser" COMPONENT ${component})
     install(FILES ${THEMES} DESTINATION "${destination}/themes" COMPONENT ${component})
     install(FILES ${INTERNAL_RESOURCES} DESTINATION "${destination}/ladybird" COMPONENT ${component})
     install(FILES ${ABOUT_PAGES} DESTINATION "${destination}/ladybird/about-pages" COMPONENT ${component})