Consolidate Schema and RecordBatch projection #1638

[alamb]

Is your feature request related to a problem or challenge? Please describe what you are trying to do.
@hntd187 added RecordBatch::project and Schema::project in apache/arrow-rs#1033, which among other thing correctly handle metadata and they make the code cleaner

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Use RecordBatch::project and Schema::project in DataFusion where appropriate

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