Issue/Feature Description:
Remove the deprecated Telemetry service installation and uninstallation from the SODA installer.

Why this issue to fixed / feature is needed(give scenarios or use cases):
Telemetry service was added in the earlier releases of OpenSDS.
This service is since deprecated and we now use Delfin for the monitoring of storage devices.

Telemetry service was installed and uninstalled using the ansible installer. Since the Telemetry service is no longer used the installer files and scripts that were used for Telemetry should be removed from the Installer repository.

How to reproduce, in case of a bug:

Other Notes / Environment Information: (Please give the env information, log link or any useful information for this issue)
These are the locations of the telemetry related files.
/ansible/roles/telemetry-installer/
/ansible/roles/telemetry-uninstaller
ansible/group_vars/telemetry.yml

There may be other locations where telemetry related code may be present.