clean up UnusedImport and Deprecated warnings (#5813)

beacon_chain/networking/eth2_network.nim

@@ -2262,8 +2262,7 @@ proc createEth2Node*(rng: ref HmacDrbgContext,
         info "Adding privileged direct peer", peerId, address
       res
 
-    hostAddress = tcpEndPoint(
-      ValidIpAddress.init config.listenAddress, config.tcpPort)
+    hostAddress = tcpEndPoint(config.listenAddress, config.tcpPort)
     announcedAddresses =
       if extIp.isNone() or extTcpPort.isNone(): @[]
       else: @[tcpEndPoint(extIp.get(), extTcpPort.get())]

ncli/validator_db_aggregator.nim

@@ -6,14 +6,10 @@
 # at your option. This file may not be copied, modified, or distributed except according to those terms.
 
 import
-  std/parsecsv,
   stew/[io2, byteutils], chronicles, confutils, snappy,
   ../beacon_chain/spec/datatypes/base,
   ./ncli_common
 
-from std/os import fileExists
-from std/strutils import parseBiggestInt, parseBiggestUInt
-
 type
   AggregatorConf = object
     startEpoch {.
@@ -159,6 +155,9 @@ proc advanceEpochs*(aggregator: var ValidatorDbAggregator, epoch: Epoch,
 
 when isMainModule:
   import std/streams
+  from std/os import fileExists
+  from std/parsecsv import CsvParser, CsvRow, open, readRow
+  from std/strutils import parseBiggestInt, parseBiggestUInt
 
   when defined(posix):
     import system/ansi_c