message: Drop --jsonrpc-import flag when starting ElectsCash
  Starting from the next version of ElectrsCash (3.0) the default
  behaviour would be to fetch block data via RPC call rather than
  by accessing and parsing the *.blk file directly.
diff: @@ -159,9 +159,6 @@ std::vector<std::string> electrs_args(int rpcport, const std::string &network)
  // bitcoind data dir (for cookie file)
  args.push_back("--daemon-dir=" + GetDataDir(false).string());
  - // Use rpc interface instead of attempting to parse *blk files
  - args.push_back("--jsonrpc-import");
  -
  // Where to store electrs database files.
  const std::string defaultDir = (GetDataDir() / ELECTRSCASH_BIN).string();
  args.push_back("--db-dir=" + GetArg("-electrum.dir", defaultDir));
  