NIFI-13004 remove include-grpc profile from developer and walkthrough…

[markobean]

… guides

Summary

Simple update to the Developer and Walkthrough Guides to remove reference to include-grpc profile. This applies only to 2.x branch.

Can the website be updated with this change immediately/prior to the next release?

NIFI-13004

Tracking

Please complete the following tracking steps prior to pull request creation.

Issue Tracking

• Apache NiFi Jira issue created

Pull Request Tracking

• Pull Request title starts with Apache NiFi Jira issue number, such as NIFI-00000
• Pull Request commit message starts with Apache NiFi Jira issue number, as such NIFI-00000

Pull Request Formatting

• Pull Request based on current revision of the main branch
• Pull Request refers to a feature branch with one commit containing changes

Verification

Please indicate the verification steps performed prior to pull request creation.

Build

• Build completed using mvn clean install -P contrib-check
  • JDK 21

Licensing

• New dependencies are compatible with the Apache License 2.0 according to the License Policy
• New dependencies are documented in applicable LICENSE and NOTICE files

Documentation

• Documentation formatting appears as expected in rendered files

[exceptionfactory]

Thanks for the cleanup @markobean! +1 merging

[exceptionfactory]

This change is part of the generated documentation, which will be published as part of the next release process.