WIP - Remove core.ReplicatedData from MerkleCRDT interface

It is never actually used, and instead makes implementations of the MerkleCRDT have this weird self referencing hack via the clock, as well as doubling the implmentations of the already complicated core.ReplicatedData making it appear to be more complex than it actually is.

internal/merkle/crdt/composite.go

@@ -57,10 +57,6 @@ func (m *MerkleCompositeDAG) Clock() *clock.MerkleClock {
 	return m.clock
 }
 
-func (m *MerkleCompositeDAG) Merge(ctx context.Context, other core.Delta) error {
-	return m.reg.Merge(ctx, other)
-}
-
 // Delete sets the values of CompositeDAG for a delete.
 func (m *MerkleCompositeDAG) Delete(
 	ctx context.Context,

internal/merkle/crdt/counter.go

@@ -52,10 +52,6 @@ func (m *MerkleCounter) Clock() *clock.MerkleClock {
 	return m.clock
 }
 
-func (m *MerkleCounter) Merge(ctx context.Context, other core.Delta) error {
-	return m.reg.Merge(ctx, other)
-}
-
 // Save the value of the  Counter to the DAG.
 func (m *MerkleCounter) Save(ctx context.Context, data any) (cidlink.Link, []byte, error) {
 	value, ok := data.(*DocField)

internal/merkle/crdt/lwwreg.go

@@ -50,10 +50,6 @@ func (m *MerkleLWWRegister) Clock() *clock.MerkleClock {
 	return m.clock
 }
 
-func (m *MerkleLWWRegister) Merge(ctx context.Context, other core.Delta) error {
-	return m.reg.Merge(ctx, other)
-}
-
 // Save the value of the register to the DAG.
 func (m *MerkleLWWRegister) Save(ctx context.Context, data any) (cidlink.Link, []byte, error) {
 	value, ok := data.(*DocField)

internal/merkle/crdt/merklecrdt.go

@@ -37,7 +37,6 @@ type Stores interface {
 // CRDT payload. It implements the ReplicatedData interface
 // so it can be merged with any given semantics.
 type MerkleCRDT interface {
-	core.ReplicatedData
 	Clock() *clock.MerkleClock
 	Save(ctx context.Context, data any) (cidlink.Link, []byte, error)
 }