I am a beginner in quantum computing and I was meddling with HHL algorithm for my class project. Turns out the linear solver algorithms (mainly HHL algorithm) are removed from qiskit library (see https://qiskit.org/documentation/release_notes.html) and now exist only as a tutorial.
I want to ask what is the reason of deprecation? Is it only useful for understanding quantum algorithms and has no applicability? I am asking this to understand why it is not supported before going on with the improvements done with it.