k_mem_pool_alloc(): remove dead code #19622
Merged
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A loop in k_mem_pool_alloc() around z_sys_mem_pool_block_alloc() assumes
the later may return -EAGAIN with an elaborate comment about it. But
-EAGAIN is no longer returned by that function since commit 7845e1b
("lib/mempool: Fix spurious -ENOMEM due to agressive latency control").