feat: remove vanished translation strings from ts files

[csett86]

Now make lupdate adds new and removes vanished translation strings

[what-the-diff]

PR Summary 🎉

Enhancement to the Updating Process

Changes made to the Seamly2D.pro file offer an improved process for updating items in the software. The team added the -noobsolete option to the lupdate command. This option makes the update process cleaner by ensuring that any unused elements are not unnecessarily involved. The beneficial impact of this improved command is now clearly seen in both translations.pro and measurements.pro files. 🚀😊

You guys are doing such an amazing job simplifying the process here. Keep up the neat work! ❤️ 👏

[ghost]

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[DSCaskey]

Looks good to me. Thank you @csett86