Revert "bpf: support deferring bpf_link dealloc to after RCU grace period"
This reverts commit 876941f5 which is commit 1a80dbcb upstream. It breaks the Android kernel abi and can be brought back in the future in an abi-safe way if it is really needed. Bug: 161946584 Change-Id: Idb04e56ff1f766405c4aeddef76d9a68a07258b7 Signed-off-by:Greg Kroah-Hartman <gregkh@google.com>
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