improve performance in the logicalOptimize
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type/enhancement
- Dominant language
- Go
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Description
## Enhancement
https://flamegraph.com/share/66492b21-460e-11f0-9c9f-da4acad57e16
1.The datasource‘s pushdown has done the predicate simplification. Do we need to do it again in the predicate simplification rule.
2. reuse the memory in the predicate simplification.
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