refactor: Retire Checks amendment (#6055)

Amendments activated for more than 2 years can be retired. This change retires the Checks amendment.

include/xrpl/protocol/detail/features.macro

@@ -68,7 +68,6 @@ XRPL_FIX    (RemoveNFTokenAutoTrustLine, Supported::yes, VoteBehavior::DefaultYe
 XRPL_FEATURE(FlowSortStrands,            Supported::yes, VoteBehavior::DefaultYes)
 XRPL_FEATURE(RequireFullyCanonicalSig,   Supported::yes, VoteBehavior::DefaultYes)
 XRPL_FEATURE(DeletableAccounts,          Supported::yes, VoteBehavior::DefaultYes)
-XRPL_FEATURE(Checks,                     Supported::yes, VoteBehavior::DefaultYes)
 XRPL_FEATURE(Flow,                       Supported::yes, VoteBehavior::DefaultYes)
 
 // The following amendments are obsolete, but must remain supported
@@ -116,6 +115,7 @@ XRPL_RETIRE_FIX(STAmountCanonicalize)
 XRPL_RETIRE_FIX(TakerDryOfferRemoval)
 XRPL_RETIRE_FIX(TrustLinesToSelf)
 
+XRPL_RETIRE_FEATURE(Checks)
 XRPL_RETIRE_FEATURE(CheckCashMakesTrustLine)
 XRPL_RETIRE_FEATURE(CryptoConditions)
 XRPL_RETIRE_FEATURE(DepositAuth)

include/xrpl/protocol/detail/transactions.macro

@@ -226,7 +226,7 @@ TRANSACTION(ttPAYCHAN_CLAIM, 15, PaymentChannelClaim,
 #endif
 TRANSACTION(ttCHECK_CREATE, 16, CheckCreate,
     Delegation::delegatable,
-    featureChecks,
+    uint256{},
     noPriv,
     ({
     {sfDestination, soeREQUIRED},
@@ -242,7 +242,7 @@ TRANSACTION(ttCHECK_CREATE, 16, CheckCreate,
 #endif
 TRANSACTION(ttCHECK_CASH, 17, CheckCash,
     Delegation::delegatable,
-    featureChecks,
+    uint256{},
     noPriv,
     ({
     {sfCheckID, soeREQUIRED},
@@ -256,7 +256,7 @@ TRANSACTION(ttCHECK_CASH, 17, CheckCash,
 #endif
 TRANSACTION(ttCHECK_CANCEL, 18, CheckCancel,
     Delegation::delegatable,
-    featureChecks,
+    uint256{},
     noPriv,
     ({
     {sfCheckID, soeREQUIRED},