refactor: replace the kubectl binary with the upstream sdk (#524)

pkg/libkubectl/delete.go

@@ -0,0 +1,24 @@
+package libkubectl
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+
+	"k8s.io/kubectl/pkg/cmd/delete"
+)
+
+func (c *Client) Delete(ctx context.Context, manifests []string) (string, error) {
+	buf := new(bytes.Buffer)
+
+	cmd := delete.NewCmdDelete(c.factory, c.streams)
+	cmd.SetArgs(manifestFilesToArgs(manifests))
+	cmd.Flags().Set("ignore-not-found", "true")
+	cmd.SetOut(buf)
+
+	if err := cmd.ExecuteContext(ctx); err != nil {
+		return "", fmt.Errorf("error deleting resources: %w", err)
+	}
+
+	return buf.String(), nil
+}