Refactor: remove the INPUTw input script and transfer parameters to INPUT (SIAB refactor 1/3)

[kirk0830]

Reminder

• Have you linked an issue with this pull request?
• Have you added adequate unit tests and/or case tests for your pull request?
• Have you noticed possible changes of behavior below or in the linked issue?
• Have you explained the changes of codes in core modules of ESolver, HSolver, ElecState, Hamilt, Operator or Psi? (ignore if not applicable)

Linked Issue

Fix #6469

What's changed?

• remove the input script INPUTw, parameters still being used out_spillage and spillage_outdir are transferred to the domain of INPUT

Any changes of core modules? (ignore if not applicable)

no

[mohanchen]

Good job!