[Improvement]: Remove deprecated code that needs to be removed in 0.7

[zhongqishang]

Search before asking

• [X] I have searched in the issues and found no similar issues.

What would you like to be improved?

Remove org.apache.amoro.optimizer.common.OptimizerConfig#memorySize and related code.

How should we improve?

No response

Are you willing to submit PR?

• [ ] Yes I am willing to submit a PR!

Subtasks

No response

Code of Conduct

• [X] I agree to follow this project's Code of Conduct

[misselvexu]

/ Assign to me ?

[zhoujinsong]

/ Assign to me ?

Assigned. Thanks for your interest in contributing. Please feel free to tell me if you have any questions about the work.

[zhengkezhou1]

Hi @zhoujinsong, I would like to try this.