[C++] Remove std::move around a raw pointer in flatbuffers.h (#4339)

* Remove std::move around a raw pointer

Calling std::move on a raw pointer has no advantage to just copying its value. Moreover, it is confusing, because it indicates that the argument is movable in some non-trivial way (e.g., is it actually meant to be a smart pointer?). More context in https://crbug.com/729393.

* Remove the move constructor altogether
1 file changed