[CSL-1165] Loosen some constraints in Pos.Delegation.Logic.Mempool
[CSL-1165] Loosen some constraints in Pos.Delegation.Logic.Mempool

input-output-hk/cardano-sl,input-output-hk/pos-haskell-prototype,input-output-hk/cardano-sl,input-output-hk/cardano-sl,input-output-hk/pos-haskell-prototype,input-output-hk/pos-haskell-prototype,input-output-hk/cardano-sl