I ran the following code replace:
    s/(Uni|Xub)?String\s*::\s*CreateFromInt32/OUString::number/

And finally removed String::CreateFromInt32().

Change-Id: I53b26a59c68511ae09f0ee82cfade210d0de3fa5
Reviewed-on: https://gerrit.libreoffice.org/2279Tested-by: LibreOffice gerrit bot <gerrit@libreoffice.org>
Reviewed-by: Thomas Arnhold <thomas@arnhold.org>
Tested-by: Thomas Arnhold <thomas@arnhold.org>