Remove arrayOop.inline.hpp

This header file has only one small function, which can safely be defined inside arrayOop.hpp. So there's no need for a separate arrayOop.inline.hpp.

void* arrayOopDesc::base(BasicType type) const {
  return reinterpret_cast<void*>(cast_from_oop<intptr_t>(as_oop()) + base_offset_in_bytes(type));
}