init: Remove confusing '(possible integer overflow?)' from error message

src/init.cpp

@@ -1131,7 +1131,7 @@ bool AppInitMain(NodeContext& node, interfaces::BlockAndHeaderTipInfo* tip_info)
 
     auto opt_max_upload = ParseByteUnits(args.GetArg("-maxuploadtarget", DEFAULT_MAX_UPLOAD_TARGET), ByteUnit::M);
     if (!opt_max_upload) {
-        return InitError(strprintf(_("Unable to parse -maxuploadtarget: '%s' (possible integer overflow?)"), args.GetArg("-maxuploadtarget", "")));
+        return InitError(strprintf(_("Unable to parse -maxuploadtarget: '%s'"), args.GetArg("-maxuploadtarget", "")));
     }
 
     // ********************************************************* Step 4a: application initialization