gnucash master: CsvImp - use std::optional instead of boost::optional

[Geert Janssens]

Updated	 via  https://github.com/Gnucash/gnucash/commit/9efbdc15 (commit)
	from  https://github.com/Gnucash/gnucash/commit/c5109c67 (commit)



commit 9efbdc15cf979da22c6d66209e8d5e5a63fa1f75
Author: Geert Janssens <geert at kobaltwit.be>
Date:   Wed Feb 15 18:30:17 2023 +0100

    CsvImp - use std::optional instead of boost::optional



Summary of changes:
 .../import-export/csv-imp/gnc-imp-props-price.cpp  | 19 ++++---
 .../import-export/csv-imp/gnc-imp-props-price.hpp  | 18 +++---
 gnucash/import-export/csv-imp/gnc-imp-props-tx.cpp | 58 +++++++++----------
 gnucash/import-export/csv-imp/gnc-imp-props-tx.hpp | 66 +++++++++++-----------
 .../import-export/csv-imp/gnc-imp-settings-csv.hpp |  2 +-
 gnucash/import-export/csv-imp/gnc-import-price.cpp |  8 +--
 gnucash/import-export/csv-imp/gnc-import-price.hpp |  6 +-
 gnucash/import-export/csv-imp/gnc-import-tx.cpp    |  7 ++-
 gnucash/import-export/csv-imp/gnc-import-tx.hpp    |  6 +-
 9 files changed, 96 insertions(+), 94 deletions(-)