Cleanup 1.0 automation tools

[dblock]

Is your feature request related to a problem? Please describe.

Can these be deleted? What else can be deleted?

Describe the solution you'd like

Delete the following:

https://github.com/opensearch-project/opensearch-build/blob/main/manifests/manifest.linux.x64.example.yml
https://github.com/opensearch-project/opensearch-build/blob/main/manifests/manifest.linux.x64.example.yml
https://github.com/opensearch-project/opensearch-build/blob/main/.github/workflows/check-vulnerability-whitesource.yml

[dblock]

@peterzhuamazon Maybe you can help us identifying what's used and what's not used anymore?

[peterzhuamazon]

@gaiksaya
https://github.com/opensearch-project/opensearch-build/blob/main/manifests/manifest.linux.x64.example.yml
https://github.com/opensearch-project/opensearch-build/blob/main/manifests/manifest.linux.x64.example.yml

@dblock
https://github.com/opensearch-project/opensearch-build/blob/main/.github/workflows/check-vulnerability-whitesource.yml
Please leave this as it be as @zelinh will need it to check out whitesource.

[dblock]

@dblock
https://github.com/opensearch-project/opensearch-build/blob/main/.github/workflows/check-vulnerability-whitesource.yml
Please leave this as it be as @zelinh will need it to check out whitesource.

This was deleted in #295 as it was disabled. Anyone can put it back when we start running it again.

[peternied]

[Triage] these files have been removed