Remove unused checkFinalTx

src/interfaces/chain.h

@@ -116,9 +116,6 @@ public:
     //! or one of its ancestors.
     virtual std::optional<int> findLocatorFork(const CBlockLocator& locator) = 0;
 
-    //! Check if transaction will be final given chain height current time.
-    virtual bool checkFinalTx(const CTransaction& tx) = 0;
-
     //! Return whether node has the block and optionally return block metadata
     //! or contents.
     virtual bool findBlock(const uint256& hash, const FoundBlock& block={}) = 0;