removed configuration option for number of for corehandler threads as it cannot properly deal with anything more than 1, updated man pages to current 6.4 versions for now

daemon/scripts/core-daemon

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 """
 core-daemon: the CORE daemon is a server process that receives CORE API
 messages and instantiates emulated nodes and networks within the kernel. Various
@@ -93,12 +93,10 @@ def get_merged_config(filename):
     # these are the defaults used in the config file
     default_log = os.path.join(constants.CORE_CONF_DIR, "logging.conf")
     default_grpc_port = "50051"
-    default_threads = "1"
     default_address = "localhost"
     defaults = {
         "port": str(CORE_API_PORT),
         "listenaddr": default_address,
-        "numthreads": default_threads,
         "grpcport": default_grpc_port,
         "grpcaddress": default_address,
         "logfile": default_log
@@ -110,8 +108,6 @@ def get_merged_config(filename):
                         help=f"read config from specified file; default = {filename}")
     parser.add_argument("-p", "--port", dest="port", type=int,
                         help=f"port number to listen on; default = {CORE_API_PORT}")
-    parser.add_argument("-n", "--numthreads", dest="numthreads", type=int,
-                        help=f"number of server threads; default = {default_threads}")
     parser.add_argument("--ovs", action="store_true", help="enable experimental ovs mode, default is false")
     parser.add_argument("--grpc-port", dest="grpcport",
                         help=f"grpc port to listen on; default {default_grpc_port}")
@@ -148,14 +144,9 @@ def main():
 
     :return: nothing
     """
-    # get a configuration merged from config file and command-line arguments
     cfg = get_merged_config(f"{CORE_CONF_DIR}/core.conf")
-
-    # load logging configuration
     load_logging_config(cfg["logfile"])
-
     banner()
-
     try:
         cored(cfg)
     except KeyboardInterrupt: