DRIVERS-2774 Delete pool-clear-interrupt-immediately

[stIncMale]

SDAM already have tests covering the functionality, for example,

specifications/source/server-discovery-and-monitoring/tests/unified/interruptInUse-pool-clear.yml

Line 23 in fe95775

- description: Connection pool clear uses interruptInUseConnections=true after monitor timeout

Given that currently pool-clear-interrupt-immediately cannot possibly work in Python and requires modifying the test runner, it seems better to remove the test.

Please complete the following before merging:

• Update changelog.
• Make sure there are generated JSON files from the YAML test files.
• Test changes in at least one language driver.
• Test these changes against all server versions and topologies (including standalone, replica set, sharded clusters, and serverless).

DRIVERS-2774

[ShaneHarvey]

Thanks!