[Minor] Delete some fatals and comment some CHECKs

[czpmango]

What type of PR is this?

• bug
• feature
• enhancement

What problem(s) does this PR solve?

Description:

Sort out the code that may cause crash in the implementation of the expression visitor

Checklist:

Tests:

• Unit test(positive and negative cases)
• Function test
• Performance test
• N/A

Affects:

• Documentation affected (Please add the label if documentation needs to be modified.)
• Incompatibility (If it breaks the compatibility, please describe it and add the label.）
• If it's needed to cherry-pick (If cherry-pick to some branches is required, please label the destination version(s).)
• Performance impacted: Consumes more CPU/Memory

[nevermore3]

Is there a relevant test case