multi: Removed deprecated interfacer linter

Removed the deprecated interfacer linter from being called for linting.

Also removed the `nolint:interfacer` within the code.

https://github.com/lightningnetwork/lnd/issues/5741

channeldb/channel.go

@@ -882,8 +882,9 @@ func fetchChanBucket(tx kvdb.RTx, nodeKey *btcec.PublicKey,
 // channel's data resides in given: the public key for the node, the outpoint,
 // and the chainhash that the channel resides on. This differs from
 // fetchChanBucket in that it returns a writeable bucket.
-func fetchChanBucketRw(tx kvdb.RwTx, nodeKey *btcec.PublicKey, // nolint:interfacer
-	outPoint *wire.OutPoint, chainHash chainhash.Hash) (kvdb.RwBucket, error) {
+func fetchChanBucketRw(tx kvdb.RwTx, nodeKey *btcec.PublicKey,
+	outPoint *wire.OutPoint, chainHash chainhash.Hash) (kvdb.RwBucket,
+	error) {
 
 	// First fetch the top level bucket which stores all data related to
 	// current, active channels.

channeldb/graph.go

@@ -578,7 +578,9 @@ func (c *ChannelGraph) DisabledChannelIDs() ([]uint64, error) {
 //
 // TODO(roasbeef): add iterator interface to allow for memory efficient graph
 // traversal when graph gets mega
-func (c *ChannelGraph) ForEachNode(cb func(kvdb.RTx, *LightningNode) error) error { // nolint:interfacer
+func (c *ChannelGraph) ForEachNode(
+	cb func(kvdb.RTx, *LightningNode) error) error {
+
 	traversal := func(tx kvdb.RTx) error {
 		// First grab the nodes bucket which stores the mapping from
 		// pubKey to node information.

channeldb/payments.go

@@ -731,7 +731,9 @@ func fetchPaymentWithSequenceNumber(tx kvdb.RTx, paymentHash lntypes.Hash,
 // DeletePayment deletes a payment from the DB given its payment hash. If
 // failedHtlcsOnly is set, only failed HTLC attempts of the payment will be
 // deleted.
-func (d *DB) DeletePayment(paymentHash lntypes.Hash, failedHtlcsOnly bool) error { // nolint:interfacer
+func (d *DB) DeletePayment(paymentHash lntypes.Hash,
+	failedHtlcsOnly bool) error {
+
 	return kvdb.Update(d, func(tx kvdb.RwTx) error {
 		payments := tx.ReadWriteBucket(paymentsRootBucket)
 		if payments == nil {