Refactor: more light-weighted formatter library

[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 #3888 , plan to do next: #4108

Unit Tests and/or Case Tests for my changes

• A unit test is added for each new feature or bug fix.

What's changed

• delete redundant codes in original formatter
• temporarily remove formatter in out_mat_hs

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

• No.