diff --git a/sessiontxn/interface.go b/sessiontxn/interface.go
index 0ad90e3f56815..6969895bbd5a7 100644
--- a/sessiontxn/interface.go
+++ b/sessiontxn/interface.go
@@ -117,8 +117,6 @@ type TxnContextProvider interface {
 	TxnAdvisable
 	// GetTxnInfoSchema returns the information schema used by txn
 	GetTxnInfoSchema() infoschema.InfoSchema
-	// SetTxnInfoSchema sets the information schema used by txn.
-	SetTxnInfoSchema(is infoschema.InfoSchema)
 	// GetTxnScope returns the current txn scope
 	GetTxnScope() string
 	// GetReadReplicaScope returns the read replica scope
diff --git a/sessiontxn/isolation/base.go b/sessiontxn/isolation/base.go
index 0c0c1be98acad..3fca66f52f123 100644
--- a/sessiontxn/isolation/base.go
+++ b/sessiontxn/isolation/base.go
@@ -152,10 +152,6 @@ func (p *baseTxnContextProvider) GetTxnInfoSchema() infoschema.InfoSchema {
 	return p.infoSchema
 }
 
-func (p *baseTxnContextProvider) SetTxnInfoSchema(is infoschema.InfoSchema) {
-	p.infoSchema = is
-}
-
 // GetTxnScope returns the current txn scope
 func (p *baseTxnContextProvider) GetTxnScope() string {
 	return p.sctx.GetSessionVars().TxnCtx.TxnScope
diff --git a/sessiontxn/staleread/provider.go b/sessiontxn/staleread/provider.go
index a3734202ee6c5..308ed2b33cbf3 100644
--- a/sessiontxn/staleread/provider.go
+++ b/sessiontxn/staleread/provider.go
@@ -53,11 +53,6 @@ func (p *StalenessTxnContextProvider) GetTxnInfoSchema() infoschema.InfoSchema {
 	return p.is
 }
 
-// SetTxnInfoSchema sets the information schema used by txn.
-func (p *StalenessTxnContextProvider) SetTxnInfoSchema(is infoschema.InfoSchema) {
-	p.is = is
-}
-
 // GetTxnScope returns the current txn scope
 func (p *StalenessTxnContextProvider) GetTxnScope() string {
 	return p.sctx.GetSessionVars().TxnCtx.TxnScope