Revert "Fix the documentation"

This reverts commit dfc8cea.

Author: franzpoeschel

docs/source/details/mpi.rst

@@ -30,7 +30,6 @@ Functionality                Behavior           Description
 ``::resetDataset`` [1]_ [2]_ *backend-specific* declare, write
 ``::makeConstant`` [3]_      *backend-specific* declare, write
 ``::storeChunk`` [1]_        independent        write
-``::storeChunk`` [5]_        collective         Span-based overloads
 ``::loadChunk``              independent        read
 ``::availableChunks`` [4]_   collective         read, immediate result
 ============================ ================== ================================
@@ -50,8 +49,6 @@ Functionality                Behavior           Description
 .. [4] We usually open iterations delayed on first access. This first access is usually the ``flush()`` call after a ``storeChunk``/``loadChunk`` operation. If the first access is non-collective, an explicit, collective ``Iteration::open()`` can be used to have the files already open.
        Alternatively, iterations might be accessed for the first time by immediate operations such as ``::availableChunks()``.
 
-.. [5] The Span-based ``storeChunk`` API calls return a backend-allocated pointer, requiring flush operations. These API calls hence inherit the collective properties of flushing. Use store calls with zero-size extent if a rank does not contribute anything.
-
 .. warning::
 
   The openPMD-api will by default flush only those Iterations which are dirty, i.e. have been written to.

include/openPMD/RecordComponent.hpp

@@ -406,11 +406,6 @@ class RecordComponent : public BaseRecordComponent
      * @brief Overload of storeChunk() that lets the openPMD API allocate
      *        a buffer.
      *
-     * Collective call: Unlike most other storeChunk() calls, this call returns
-     * pointers allocated by the IO backends and hence inherits the collective
-     * properties of flushing. Apply zero-extent storeChunk() calls from ranks
-     * that do not contribute anything.
-     *
      * This may save memory if the openPMD backend in use is able to provide
      * users a view into its own buffers, avoiding the need to allocate
      * a new buffer.
@@ -447,11 +442,6 @@ class RecordComponent : public BaseRecordComponent
     /**
      * Overload of span-based storeChunk() that uses operator new() to create
      * a buffer.
-     *
-     * Collective call: Unlike most other storeChunk() calls, this call returns
-     * pointers allocated by the IO backends and hence inherits the collective
-     * properties of flushing. Apply zero-extent storeChunk() calls from ranks
-     * that do not contribute anything.
      */
     template <typename T>
     DynamicMemoryView<T> storeChunk(Offset, Extent);