Remove the final_cltv_expiry_delta in RouteParameters entirely#2015

TheBlueMatt merged 3 commits intolightningdevkit:mainlightningdevkit/rust-lightning:mainfrom

TheBlueMatt:2023-02-no-dumb-redundant-fieldsTheBlueMatt/rust-lightning:2023-02-no-dumb-redundant-fieldsCopy head branch name to clipboard