chore: Remove unused actions

.Lib9c.Tests/Action/StakeTest.cs

@@ -527,7 +527,7 @@ public void Execute_Success_When_Validator_Tries_To_Increase_Amount_Without_Clai
                 Assert.Equal(3, nextStakeState.StateVersion);
             }
 
-            world = DelegationUtil.EnsureValidatorUnbondedClaimed(
+            world = DelegationUtil.EnsureUnbondedClaimed(
                 nextState, _agentAddr, height + interval + ValidatorDelegatee.ValidatorUnbondingPeriod);
 
             var expectedBalance = _ncg * Math.Max(0, previousAmount - amount);

.Lib9c.Tests/Util/DelegationUtil.cs

@@ -109,24 +109,5 @@ public static IWorld EnsureUnbondedClaimed(
             return claimUnbonded.Execute(actionContext);
             return world;
         }
-
-        public static IWorld EnsureValidatorUnbondedClaimed(
-            IWorld world, Address agentAddress, long blockHeight)
-        {
-            if (blockHeight < 0)
-            {
-                throw new ArgumentOutOfRangeException(nameof(blockHeight));
-            }
-
-            var actionContext = new ActionContext
-            {
-                PreviousState = world,
-                Signer = agentAddress,
-                BlockIndex = blockHeight,
-            };
-            var claimUnbonded = new ClaimValidatorUnbonded();
-            return claimUnbonded.Execute(actionContext);
-            return world;
-        }
     }
 }

Lib9c/Action/Guild/ClaimUnbonded.cs

@@ -6,6 +6,10 @@
 
 namespace Nekoyume.Action.Guild
 {
+    /// <summary>
+    /// An action to claim unbonded assets.
+    /// This action can be executed only when the unbonding period is over.
+    /// </summary>
     [ActionType(TypeIdentifier)]
     public sealed class ClaimUnbonded : ActionBase
     {
@@ -34,9 +38,6 @@ public override IWorld Execute(IActionContext context)
 
             var world = context.PreviousState;
             var repository = new GuildRepository(world, context);
-
-            var guildParticipant = repository.GetGuildParticipant(context.Signer);
-            var guild = repository.GetGuild(guildParticipant.GuildAddress);
             var guildDelegator = repository.GetDelegator(context.Signer);
             guildDelegator.ReleaseUnbondings(context.BlockIndex);