Refactor: remove class Local_Orbital_Charge

[pxlxingliang]

Describe the Code Quality Issue

Class Local_Orbital_Charge should be remove from ABACUS codes.

Additional Context

No response

Task list for Issue attackers (only for developers)

• Identify the specific code file or section with the code quality issue.
• Investigate the issue and determine the root cause.
• Research best practices and potential solutions for the identified issue.
• Refactor the code to improve code quality, following the suggested solution.
• Ensure the refactored code adheres to the project's coding standards.
• Test the refactored code to ensure it functions as expected.
• Update any relevant documentation, if necessary.
• Submit a pull request with the refactored code and a description of the changes made.

[pxlxingliang]

Class unkOverlap_lcao is only used in the calculation of berryphase, and member function init(const Grid_Technique& gt, std::complex<double>*** wfc_k_grid, const int nkstot); has an input parameter wfc_k_grid, which is passed by loc->wfc_k_grid when init() is called. While wfc_k_grid is useless, as well as the member function nkdotp_LCAO(), get_lcao_wfc_global_ik() and test().