Avoid schema deep clone in PruningExpressionBuilder

[findepi]

Avoid schema deep clone in

datafusion/datafusion/pruning/src/pruning_predicate.rs

Line 981 in 6870cc1

let df_schema = DFSchema::try_from(schema.clone())?;

by passing SchemaRef to that function.

Originally posted by @alamb in #17189 (comment)

[etolbakov]

Hey Piotr @findepi
If that's not an urgent one I'd like to give it a go.

[etolbakov]

@findepi I believe this could be closed

[findepi]

thank you @etolbakov