libcamera: Switch from utils::make_unique to std::make_unique

Now that we're using C++-14, drop utils::make_unique for
std::make_unique.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>

src/libcamera/utils.cpp

@@ -70,11 +70,6 @@ char *secure_getenv(const char *name)
 #endif
 }
 
-/**
- * \fn libcamera::utils::make_unique(Args &&... args)
- * \brief Constructs an object of type T and wraps it in a std::unique_ptr.
- */
-
 /**
  * \fn libcamera::utils::set_overlap(InputIt1 first1, InputIt1 last1,
  *				     InputIt2 first2, InputIt2 last2)