[config reload]Modifying config reload tests to align with latest con…

…fig reload enhancement (#7558)

### Approach
#### What is the motivation for this PR?
Modifying config reload tests to align with latest config reload enhancement according to HLD sonic-net/SONiC#1203

#### How did you do it?
Removed the timer based checks

#### How did you verify/test it?
Run the tests with config reload enhamcenet changes

tests/common/config_reload.py

@@ -43,16 +43,6 @@ def config_system_checks_passed(duthost):
  if int(out['stdout'].strip()) < 120:
  return False
 
- logging.info("Checking if delayed services are up")
- out = duthost.shell("systemctl list-dependencies sonic-delayed.target --plain |sed '1d'")
- status = duthost.shell("systemctl is-enabled {}".format(out['stdout'].replace("\n", " ")))
- services = [line.strip() for line in out['stdout'].splitlines()]
- state = [line.strip() for line in status['stdout'].splitlines()]
- for service in services:
- if state[services.index(service)] == "enabled":
- out1 = duthost.shell("systemctl show {} --property=LastTriggerUSecMonotonic --value".format(service))
- if out1['stdout'].strip() == "0":
- return False
  logging.info("All checks passed")
  return True