[Dist/CI] Remove dist from target determinator (#64721)

[Dist/CI] Remove dist from target determinator (#64721)

Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/64721

There are a couple PRs where distributed CI did not runa nd we expect
it to. Examples:

https://github.com/pytorch/pytorch/pull/64513/checks?check_run_id=3539190960,
https://github.com/pytorch/pytorch/pull/64113. All distributed tests should've
been run on these PRs, but we can see they were not:

```
Determination is skipping distributed/test_c10d_common
Determination is skipping distributed/test_c10d_gloo
Determination is skipping distributed/test_c10d_nccl
Determination is skipping distributed/test_c10d_spawn_gloo
Determination is skipping distributed/test_c10d_spawn_nccl
Running distributed/test_data_parallel without determination
Determination is skipping distributed/test_distributed_spawn
Determination is skipping distributed/test_jit_c10d
```

Since it is important to run distributed tests on PRs that touch distributed,
exclude distributed from target_det_list for now.
ghstack-source-id: 137654015

Test Plan: CI

Reviewed By: driazati, mrshenli

Differential Revision: D30830455

fbshipit-source-id: 8b0fdf5b57c2c647b0d82c48e2bb8e2bdbe4d307