Removed unused header file "chrono" from iso2dfd and particle-diffusion

[Alberto-Villarreal]

Description

Removed unused header file "chrono" from iso2dfd and particle-diffusion.
Thanks to Joe Oster for pointing that out.

Fixes # (issue)

Deleted unused includes, simplifying code

Please delete options that are not relevant. Add a 'X' to the one that is applicable.

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• Command Line
• oneapi-cli
• Visual Studio
• Eclipse IDE
• VSCode

Checklist for Moving samples:

Links and Details can be found in the samples WG Teams Files.

• Review sample design with domain reviewers https://github.com/oneapi-src/oneAPI-samples/wiki/Reviewers-and-Domain-Experts
• Implement coding guidelines and ensure code quality.
• Adhere to sample.json specification. https://github.com/oneapi-src/oneAPI-samples/wiki/sample-json-specification
• Run jsonlint on sample.json to verify json syntax. www.jsonlint.com
• Adhere to readme template
• Ensure/create CI test configurations for sample (ciTests field) https://github.com/oneapi-src/oneAPI-samples/wiki/sample-json-ci-test-object
• Enforce format via clang-format config file
• Review DPC++ code with Paul Peterseon. (GitHub User: pmpeter1)
• Review readme with Tom Lenth or Joe Oster. (GitHub User: JoeOster)
• Tested using Dev Cloud when applicable
• Implement fixes for ONSAM Jiras
• If you have new dependencies/binaries, inform Samples Project Manager Swapna R Dontharaju (@srdontha) or @JoeOster

[Alberto-Villarreal]

@JoeOster Thanks for the comment about the unused header file. I removed those includes.

[JoeOster]

I like your readme statement about the dpc_common, but it isn't addressing Linux only Windows

I would include a statement such as what's used in the mandelbrot readme, if you want to continue to use your statement, I would add it to the bottom as a Troubleshhooting section or similar.

https://github.com/Alberto-Villarreal/oneAPI-samples/tree/master/DirectProgramming/DPC%2B%2B/CombinationalLogic/mandelbrot

[Alberto-Villarreal]

I like your readme statement about the dpc_common, but it isn't addressing Linux only Windows

I would include a statement such as what's used in the mandelbrot readme, if you want to continue to use your statement, I would add it to the bottom as a Troubleshhooting section or similar.

https://github.com/Alberto-Villarreal/oneAPI-samples/tree/master/DirectProgramming/DPC%2B%2B/CombinationalLogic/mandelbrot

@JoeOster I added the General statement you suggested about the include path (Both for Linux and Windows). Deleted the warning for windows- It might be redundant and to maintain consistency with other code samples. Thanks for reviewing.