Update test_study.py

[TLSDC]

Description by Korbit AI

What change is being made?

Add a pytest skip marker to the test_launch_parallel_study test case, with a reason indicating the use case is not relevant at the moment.

Why are these changes being made?

The current relevance of the test_launch_parallel_study use case has diminished, implying that running this test is not necessary at this time. This approach allows the development and testing process to remain focused on more relevant features and tests while preserving the ability to revisit this test case in the future.

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