Update project pull request template

[semioticrobotic]

This commit streamlines the project's GitHub pull request template. Primarily, it removes white space between bullet items, which add unnecessary visual bulk to new pull requests. It also rewords a code comment and removes one that seems to reference deprecated systems.

For all changes:

• Is there a JIRA ticket associated with this PR? Is it referenced in the commit message?
• Has your PR been rebased against the latest commit within the target branch (typically develop)?
• Is your initial contribution a single, squashed commit?
• Does gradlew build run cleanly?
• Have you written or updated unit tests to verify your changes?
• If adding new dependencies to the code, are these dependencies licensed in a way that is compatible for inclusion under ASF 2.0?

[semioticrobotic]

A small change I hope saves a bit of time, screen real estate, and eye strain. Thanks for your consideration @JinwooHwang, @raboof, @nitin-amp, @sboorlagadda, and anyone else who may be able to take a look.

[sboorlagadda]

I am good with this proposal. @semioticrobotic. We generally use a JIRA ticket for every commit. But I am good with out also. Let others chime in.

[semioticrobotic]

I am good with this proposal. @semioticrobotic. We generally use a JIRA ticket for every commit. But I am good with out also. Let others chime in.

Noted! Thanks, @sboorlagadda!