Remove unused Batch.inTx

batch.go

@@ -23,7 +23,6 @@ type Batch struct {
 	resultsRead int
 	ctx         context.Context
 	err         error
-	inTx        bool
 
 	mrr *pgconn.MultiResultReader
 }
@@ -33,12 +32,6 @@ func (c *Conn) BeginBatch() *Batch {
 	return &Batch{conn: c}
 }
 
-// BeginBatch returns a *Batch query for tx. Since this *Batch is already part
-// of a transaction it will not automatically be wrapped in a transaction.
-func (tx *Tx) BeginBatch() *Batch {
-	return &Batch{conn: tx.conn, inTx: true}
-}
-
 // Conn returns the underlying connection that b will or was performed on.
 func (b *Batch) Conn() *Conn {
 	return b.conn