Remove unused function and related test

Signed-off-by: Rohit Nayak <rohit@planetscale.com>

go/cmd/internal/docgen/docgen.go

@@ -146,20 +146,12 @@ func restructure(rootDir string, dir string, name string, commands []*cobra.Comm
 				return fmt.Errorf("failed to move child command %s to its parent's dir: %w", fullCmdFilename, err)
 			}
 
-			sed := newParentLinkSedCommand(name, newName)
-			if out, err := sed.CombinedOutput(); err != nil {
-				return fmt.Errorf("failed to rewrite links to parent command in child %s: %w (extra: %s)", newName, err, out)
-			}
 		}
 	}
 
 	return nil
 }
 
-func newParentLinkSedCommand(parent string, file string) *exec.Cmd {
-	return exec.Command("xyz", "-i", "-e", fmt.Sprintf("s:(./%s/):(../):i", parent), file)
-}
-
 var (
 	wd   string
 	once sync.Once

go/cmd/internal/docgen/docgen_test.go

@@ -17,7 +17,6 @@ limitations under the License.
 package docgen
 
 import (
-	"strings"
 	"testing"
 
 	"github.com/spf13/cobra"
@@ -149,40 +148,6 @@ func TestLinkHandler(t *testing.T) {
 	}
 }
 
-func TestNewParentLinkSedCommand(t *testing.T) {
-	tests := []struct {
-		name           string
-		parentDir      string
-		fileName       string
-		expectedOutput string
-	}{
-		{
-			name:           "Empty values",
-			expectedOutput: "sed -i  -e s:(.//):(../):i ",
-		},
-		{
-			name:           "Normal value",
-			parentDir:      "./",
-			fileName:       "Some_value",
-			expectedOutput: "sed -i  -e s:(././/):(../):i Some_value",
-		},
-		{
-			name:           "Abnormal value",
-			parentDir:      "/root",
-			fileName:       `./.jash13_24`,
-			expectedOutput: "sed -i  -e s:(.//root/):(../):i ./.jash13_24",
-		},
-	}
-
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			cmd := newParentLinkSedCommand(tt.parentDir, tt.fileName)
-			// We only check for suffix because the sed command's actual path may differ on different machines.
-			require.True(t, strings.HasSuffix(cmd.String(), tt.expectedOutput))
-		})
-	}
-}
-
 func TestGetCommitID(t *testing.T) {
 	// This function should return an error when the reference is not in the
 	// git tree.