les: remove (#2211)

LES was [removed from
geth](ethereum/go-ethereum#28586) and is
generally no longer supported on the network.

Author: arnetheduck

nimbus/config.nim

@@ -117,7 +117,6 @@ type
     ## Protocol flags
     Eth                           ## enable eth subprotocol
     #Snap                          ## enable snap sub-protocol
-    Les                           ## enable les subprotocol
 
   RpcFlag* {.pure.} = enum
     ## RPC flags
@@ -373,8 +372,8 @@ type
 
     protocols {.
       desc: "Enable specific set of server protocols (available: Eth, " &
-            " Les, None.) This will not affect the sync mode"
-            # " Snap, Les, None.) This will not affect the sync mode"
+            " None.) This will not affect the sync mode"
+            # " Snap, None.) This will not affect the sync mode"
       defaultValue: @[]
       defaultValueDesc: $ProtocolFlag.Eth
       name: "protocols" .}: seq[string]
@@ -635,7 +634,6 @@ proc getProtocolFlags*(conf: NimbusConf): set[ProtocolFlag] =
   for item in repeatingList(conf.protocols):
     case item.toLowerAscii()
     of "eth": result.incl ProtocolFlag.Eth
-    of "les": result.incl ProtocolFlag.Les
     # of "snap": result.incl ProtocolFlag.Snap
     of "none": noneOk = true
     else:

nimbus/nimbus.nim

@@ -28,8 +28,7 @@ import
   ./core/clique/clique_desc,
   ./core/clique/clique_sealer,
   ./sync/protocol,
-  ./sync/handlers,
-  ./sync/protocol/les_protocol
+  ./sync/handlers
 
 when defined(evmc_enabled):
   import transaction/evmc_dynamic_loader
@@ -131,8 +130,6 @@ proc setupP2P(nimbus: NimbusNode, conf: NimbusConf,
         nimbus.ethNode.peerPool,
         nimbus.chainRef,
         nimbus.txPool)
-    of ProtocolFlag.Les:
-      nimbus.ethNode.addCapability les
     #of ProtocolFlag.Snap:
     #  nimbus.ethNode.addSnapHandlerCapability(
     #    nimbus.ethNode.peerPool,