Removed changes to unrelated file

internal/planner/group.go

@@ -11,8 +11,6 @@
 package planner
 
 import (
-	"fmt"
-
 	"github.com/sourcenetwork/defradb/client"
 	"github.com/sourcenetwork/defradb/client/request"
 	"github.com/sourcenetwork/defradb/internal/core"
@@ -61,6 +59,9 @@ type groupExecInfo struct {
 }
 
 // Creates a new group node.
+
+// The function is recursive and will construct the node-chain for any child (`_group`) collections.
+// `groupSelect` is optional and will typically be nil if the child `_group` is not requested.
 func (p *Planner) GroupBy(n *mapper.GroupBy, parsed *mapper.Select, childSelects []*mapper.Select) (*groupNode, error) {
 	if n == nil {
 		return nil, nil
@@ -82,9 +83,6 @@ func (p *Planner) GroupBy(n *mapper.GroupBy, parsed *mapper.Select, childSelects
 			// group by fields have to be propagated downwards to ensure correct sub-grouping, otherwise child
 			// groups will only group on the fields they explicitly reference
 			childSelect.GroupBy.Fields = append(childSelect.GroupBy.Fields, n.Fields...)
-			for _, field := range childSelect.GroupBy.Fields {
-				fmt.Println("field", field)
-			}
 		}
 		dataSources = append(dataSources, newDataSource(childSelect.Index))
 	}