Remove "message" from scripts

It's already almost completely unused, only used for 3dsx shortcuts, and basically always used for exactly this so better to just put it in UU since then it can be translated

romfs/lang/en/app.json

@@ -41,7 +41,6 @@
 	"CUSTOM_FONT_DESC": "If enabled, 'sdmc:/3ds/DarkStore/font.bcfnt' will be used instead of the system font, if found.",
 	"DELETE_ERROR": "Delete Error!",
 	"DELETE_PROMPT": "Are you sure you want to delete this Directory?",
-	"DELETE_UNNEEDED_FILE": "Deleting unneeded file...",
 	"DELETING": "Deleting...",
 	"DESCENDING": "Descending",
 	"DIRECTION": "Direction",
@@ -125,6 +124,10 @@
 	"SETTINGS": "Settings",
 	"SHEET_SLASH": "Seems like a '/' is included, which is not supported.\nPlease change 'sheet' to filename only.",
 	"SHORTCUT_CREATED": "Shortcut created!",
+	"SHORTCUT_COPYING": "Copying %s...",
+	"SHORTCUT_DOWNLOADING": "Downloading %s...",
+	"SHORTCUT_EXTRACTING": "Extracting %s...",
+	"SHORTCUT_INSTALLING": "Installing %s...",
 	"SIZE": "Size",
 	"SORT_BY": "Sort By",
 	"SORTING": "Sorting",