Revert "performance(ocl): set buffer pool size to 2MB"

This reverts commit b2cfd18.

Resolves: NEO-9771, NEO-9772

Signed-off-by: Dominik Dabek <[email protected]>

Author: ddabek-i

shared/source/utilities/buffer_pool_allocator.h

@@ -25,7 +25,7 @@ class MemoryManager;
 template <typename PoolT>
 struct SmallBuffersParams {
   protected:
-    static constexpr auto aggregatedSmallBuffersPoolSize = 2 * MemoryConstants::megaByte;
+    static constexpr auto aggregatedSmallBuffersPoolSize = 64 * MemoryConstants::kiloByte;
     static constexpr auto smallBufferThreshold = 4 * MemoryConstants::kiloByte;
     static constexpr auto chunkAlignment = 512u;
     static constexpr auto startingOffset = chunkAlignment;