Update GitHub Issue templates

[LaVLaS]

Description

Updates the GitHub issue templates to remove unused templates and refresh label names

How Has This Been Tested?

N/A

Merge criteria:

N/A

• The commits are squashed in a cohesive manner and have meaningful messages.
• Testing instructions have been added in the PR body (for PRs involving changes that are not immediately obvious).
• The developer has manually tested the changes and verified that the changes work

[openshift-ci]

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