Sunset deprecated pages

[techtolentino]

Feature description

After internal team discussions, the following pages can be sunset:

• Blockbuster page https://qiskit.org/blockbuster
• Qiskit Camp Africa https://qiskit.org/events/africa/
• Qiskit Camp Europe https://qiskit.org/events/europe/
• Qiskit Camp Asia https://qiskit.org/events/asia/
• Physics of Computation Conference https://qiskit.org/events/physics-of-computation/
• Qiskit India Week of Quantum https://qiskit.org/events/india-week-of-women-in-quantum/

Acceptance criteria

• [ ] remove pages
• [ ] remove any unused assets
• [ ] remove any unused code, components, or links that point to a sunsetted page

Additional context

No response