That function continues to be present in the Financial Instruments Toolbox as of the latest available release.
Financial Instruments Toolbox™ provides functions for pricing, modeling, and analyzing fixed-income, credit, and equity instrument portfolios. You can use the toolbox to perform cash-flow modeling and yield curve fitting analysis, compute prices and sensitivities, view price evolutions, and perform hedging analyses using common equity and fixed-income modeling methods. The toolbox lets you create new financial instrument types, fit yield curves to market data using parametric fitting models and bootstrapping, and construct dual curve-based pricing models.
[.... and more]
Financial Toolbox™ provides functions for the mathematical modeling and statistical analysis of financial data. You can perform portfolio optimization taking into account turnover, transaction costs, semi-continuous constraints, and minimum or maximum number of assets. The toolbox enables you to estimate risk, model credit scorecards, analyze yield curves, price fixed-income instruments and European options, and measure investment performance. Time series analysis functions let you perform transformations or regressions with missing data and convert between different trading calendars and day-count conventions.
The boundaries between the two are not clear to me, but for whatever reason they are not the same toolbox.
