Refactor LCAO code Step 3

[mohanchen]

Describe the Code Quality Issue

Keep deleting the usage of UHM in LCAO code. Try to tear down the LCAO_Hamilt.cpp because it was not a good design. I will create some new compact classes in the near future.

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.