Remove non-API docs and tutorials (backport #11352)

[mergify]

This is an automatic backport of pull request #11352 done by Mergify.
Cherry-pick of c75af15 has failed:

On branch mergify/bp/stable/0.45/pr-11352
Your branch is up to date with 'origin/stable/0.45'.

You are currently cherry-picking commit c75af150f.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	deleted:    .azure/tutorials-linux.yml
	modified:   .github/workflows/docs_deploy.yml
	modified:   azure-pipelines.yml
	deleted:    docs/_static/images/1xp.png
	deleted:    docs/_static/images/ibm_qlab.png
	deleted:    docs/_static/images/strangeworks.png
	deleted:    docs/configuration.rst
	deleted:    docs/explanation/endianness.rst
	deleted:    docs/explanation/index.rst
	deleted:    docs/faq.rst
	deleted:    docs/how_to/index.rst
	deleted:    docs/how_to/use_estimator.rst
	deleted:    docs/how_to/use_sampler.rst
	deleted:    docs/images/favicon.ico
	deleted:    docs/images/logo.png
	deleted:    docs/images/noise_cancel.png
	deleted:    docs/images/qiskit_nutshell.png
	deleted:    docs/images/quantum_interference.png
	deleted:    docs/images/system_error.png
	deleted:    docs/images/system_one.jpeg
	deleted:    docs/images/teleportation_detailed.png
	deleted:    docs/intro_tutorial1.rst
	deleted:    docs/migration_guides/algorithms_migration.rst
	deleted:    docs/migration_guides/index.rst
	deleted:    docs/migration_guides/qi_migration.rst
	deleted:    docs/qc_intro.rst
	modified:   docs/release_notes.rst
	deleted:    docs/tutorials/circuits/01_circuit_basics.ipynb
	deleted:    docs/tutorials/circuits/1_getting_started_with_qiskit.ipynb
	deleted:    docs/tutorials/circuits/2_plotting_data_in_qiskit.ipynb
	deleted:    docs/tutorials/circuits/3_summary_of_quantum_operations.ipynb
	deleted:    docs/tutorials/circuits_advanced/01_advanced_circuits.ipynb
	deleted:    docs/tutorials/circuits_advanced/02_operators_overview.ipynb
	deleted:    docs/tutorials/circuits_advanced/03_advanced_circuit_visualization.ipynb
	deleted:    docs/tutorials/circuits_advanced/04_transpiler_passes_and_passmanager.ipynb
	deleted:    docs/tutorials/circuits_advanced/05_pulse_gates.ipynb
	deleted:    docs/tutorials/circuits_advanced/07_pulse_scheduler.ipynb
	deleted:    docs/tutorials/circuits_advanced/08_gathering_system_information.ipynb
	deleted:    docs/tutorials/circuits_advanced/pulse_modulation.png
	modified:   qiskit/circuit/__init__.py
	modified:   requirements-dev.txt
	modified:   requirements-optional.txt
	deleted:    requirements-tutorials.txt
	deleted:    tools/execute_tutorials.py
	deleted:    tools/github_poBranch_update_key.enc
	modified:   tox.ini

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	deleted by them: docs/api_redirects.txt
	both modified:   docs/conf.py
	deleted by them: docs/getting_started.rst
	both modified:   docs/index.rst
	deleted by them: docs/legacy_release_notes.rst
	deleted by them: docs/migration_guides/opflow_migration.rst
	deleted by them: docs/tutorials.rst
	deleted by them: docs/tutorials/circuits_advanced/06_building_pulse_schedules.ipynb
	deleted by us:   releasenotes/notes/platform-support-f7f693aaf5dec044.yaml
	deleted by them: tools/deploy_translatable_strings.sh

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/github/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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[qiskit-bot]

Thank you for opening a new pull request.

Before your PR can be merged it will first need to pass continuous integration tests and be reviewed. Sometimes the review process can be slow, so please be patient.

While you're waiting, please feel free to review other open PRs. While only a subset of people are authorized to approve pull requests for merging, everyone is encouraged to review open pull requests. Doing reviews helps reduce the burden on the core team and helps make the project's code better for everyone.

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• @Eric-Arellano
• @javabster
• @ElePT
• @Qiskit/terra-core
• @nkanazawa1989
• @woodsp-ibm

[Eric-Arellano]

I'll open this up manually.