Remove `export_monkey_telems` from the configuration

[mssalvatore]

Refactor

Component(s) to be refactored

• configuration

Explanation

1. export_monkey_telems is used by the island, not the agent. It does not belong in the agent configuration.
2. TestTelemStore is the only component that uses this configuration option. We are planning better ways of achieving the same goal.

Tasks

• Remove TestTelemStore (0.25d)
• Remove export_monkey_telems from the configuration schema (0d)