ENH: Use std::move instead of boost::move

Summary

Use the standard library move function.

Rationale

We're on C++14, so we can just the standard library move function.

Also, avoid calling move in cases where it's actually a pessimization, see e.g. https://reviews.llvm.org/D7633.

Additional notes

r? @lhermitte

Copyright

The copyright owner is Laurențiu Nicola / CS ROMANIA and has signed the ORFEO ToolBox Contributor License Agreement.

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