chore: Remove references to roles/ovs_*

[jheidbrink]

Summary

Removes references to files which were removed in f346022 from Packer definitions. This is needed in order to build the VMs with Packer.

Test Plan

Build magma-focal-virtualbox.json with Packer

[github-actions]

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[github-actions]

feg-workflow

    2 files  202 suites   37s ⏱️
371 tests 371 ✔️ 0 💤 0 ❌
385 runs  385 ✔️ 0 💤 0 ❌

Results for commit 177e210.

♻️ This comment has been updated with latest results.

[github-actions]

dp-workflow

  2 files    2 suites   3m 44s ⏱️
15 tests 15 ✔️ 0 💤 0 ❌

Results for commit 177e210.

♻️ This comment has been updated with latest results.

[github-actions]

cloud-workflow

    7 files  355 suites   2m 7s ⏱️
979 tests 979 ✔️ 0 💤 0 ❌

Results for commit 177e210.

♻️ This comment has been updated with latest results.

[github-actions]

agw-workflow

     77 files     122 suites   6m 22s ⏱️
1 151 tests 1 147 ✔️ 4 💤 0 ❌
1 152 runs  1 148 ✔️ 4 💤 0 ❌

Results for commit 177e210.

♻️ This comment has been updated with latest results.

[maxhbr]

LGTM