Remove intellij-inspections check from CI

[Akshat-Jain]

Description

We plan to deprecate Java 8 as part of #17466. We ran into some issues with intellij-inspections check while doing that.

On further discussion, we decided that we should remove intellij-inspections check for the following reasons:

1. intellij-inspections is coming from https://github.com/ccaominh/intellij-inspect, which is tied down to openjdk8 image.
2. The image for intellij-inspect is published at https://hub.docker.com/r/ccaominh/intellij-inspect, which is outside of Apache infra.
3. The above project isn't being actively maintained.
4. We also have other checks (like maven-checkstyle-plugin and spotbugs) integrated in our CI pipeline which makes the intellij-inspections check redundant for the most part.

On further looking into point (4), the intellij-inspections check does seem to provide some useful checks which aren't being covered in other static checks we have at the moment.

So the plan is:

1. Remove intellij-inspections check.
2. Remove Java 8 support.
3. Explore other options like Qodana and integrate them in the repo as a replacement for intellij-inspections check.

---

This PR has:

• been self-reviewed.
• added documentation for new or modified features or behaviors.
• a release note entry in the PR description.
• added Javadocs for most classes and all non-trivial methods. Linked related entities via Javadoc links.
• added or updated version, license, or notice information in licenses.yaml
• added comments explaining the "why" and the intent of the code wherever would not be obvious for an unfamiliar reader.
• added unit tests or modified existing tests to cover new code paths, ensuring the threshold for code coverage is met.
• added integration tests.
• been tested in a test Druid cluster.

[cryptoe]

Why do we need to remove these files

• misc-for-inspection.xml
• Remove JavaInspectionsScope.xml
  01d0d30
  Merge state

Folks should be able to run intellij inspections locally if they want to.

[cryptoe]

Lets not remove the .idea files.