config: remove deprecated neutrino.feeurl config option

chainreg/chainregistry.go

@@ -261,18 +261,6 @@ func NewPartialChainControl(cfg *Config) (*PartialChainControl, func(), error) {
 			return nil, nil, err
 		}
 
-		// Map the deprecated neutrino feeurl flag to the general fee
-		// url.
-		if cfg.NeutrinoMode.FeeURL != "" {
-			if cfg.FeeURL != "" {
-				return nil, nil, errors.New("feeurl and " +
-					"neutrino.feeurl are mutually " +
-					"exclusive")
-			}
-
-			cfg.FeeURL = cfg.NeutrinoMode.FeeURL
-		}
-
 		cc.ChainSource = chain.NewNeutrinoClient(
 			cfg.ActiveNetParams.Params, cfg.NeutrinoCS,
 		)

docs/release-notes/release-notes-0.18.0.md

@@ -433,6 +433,9 @@
   logged](https://github.com/lightningnetwork/lnd/pull/8693) when no values are
   specified.
 
+* Removed deprecated `neutrino.feeurl` option. Please use the newer `fee.url`
+  option instead.
+
 ## Performance Improvements
 
 * Watchtower client DB migration to massively [improve the start-up 

sample-lnd.conf

@@ -802,10 +802,6 @@
 ; NOTE: This value is currently unused.
 ; neutrino.banthreshold=
 
-; DEPRECATED: Use top level 'feeurl' option. Optional URL for fee estimation. If
-; a URL is not specified, static fees will be used for estimation.
-; neutrino.feeurl=
-
 ; Optional filter header in height:hash format to assert the state of neutrino's
 ; filter header chain on startup. If the assertion does not hold, then the
 ; filter header chain will be re-synced from the genesis block.