Remove RHEL landb logic, it's no longer needed

rh_helper_scripts/landbexistence.py

-#!/usr/bin/python3
-# Example of using the Python SUDS library to access the LANDB SOAP interface
-# In Python 3, the suds-jurko port can be used: https://bitbucket.org/jurko/suds
-
-import os
-import sys
-import logging
-import argparse
-import time
-from suds.client import Client
-from suds.sax.element import Element
-from suds.xsd.doctor import ImportDoctor, Import
-from pprint import pprint
-
-# Client setup
-url = 'https://network.cern.ch/sc/soap/soap.fcgi?v=6&WSDL'
-imp = Import('http://schemas.xmlsoap.org/soap/encoding/')
-doc = ImportDoctor(imp)
-client = Client(url, doctor=doc, cache=None)
-
-# Force logger to print through stderr and add default format to messages
-logger = logging.getLogger()
-logger.setLevel(logging.DEBUG)
-ch = logging.StreamHandler(sys.stderr)
-ch.setLevel(logging.INFO)
-formatter = logging.Formatter('%(asctime)s - %(levelname)s - %(message)s')
-ch.setFormatter(formatter)
-logger.addHandler(ch)
-
-# Get hostname
-parser = argparse.ArgumentParser()
-parser.add_argument('-hn', '--host_name', required=True)
-args = parser.parse_args()
-
-# Authentication
-USERNAME = os.environ['IMAGECI_USER']
-PASSWORD = os.environ['IMAGECI_PWD']
-TEST_NODE_NAME = args.host_name
-# Max number of tries against LANDB
-max_num_try = 20
-
-token = client.service.getAuthToken(USERNAME, PASSWORD, 'CERN')
-authenticationHeader = Element('Auth').insert(Element('token').setText(token))
-client.set_options(soapheaders=authenticationHeader)
-
-success = False
-num_try = 0
-while success is False:
-    if num_try >= max_num_try:
-        logging.error("Device could not be found in LANDB after %d tries." % max_num_try)
-        sys.exit(1)
-    try:
-        criteria = client.factory.create("types:DeviceSearch")
-        criteria.Name = TEST_NODE_NAME
-        # Yes, this Location is mandatory, otherwise you get 'INVPATTERN#Invalid search pattern:-BADLOCATION'
-        criteria.Location = None
-        result = client.service.searchDevice(criteria)
-        if result:
-            success = True
-        else:
-            # List is empty
-            num_try += 1
-            # Wait 30 sec before trying again
-            time.sleep(30)
-    except Exception as e:
-        num_try += 1
-        # Wait 30 sec before trying again
-        time.sleep(30)
-
-logging.info('Node is present in LANDB, continue with tests.')
\ No newline at end of file