Remove redundant header

src/panels/config/integrations/integration-panels/esphome/dialog-esphome-encryption-key.ts

@@ -1,4 +1,4 @@
-import { mdiClose, mdiContentCopy } from "@mdi/js";
+import { mdiContentCopy } from "@mdi/js";
 import type { CSSResultGroup } from "lit";
 import { css, html, LitElement, nothing } from "lit";
 import { customElement, property, state } from "lit/decorators";
@@ -6,7 +6,6 @@ import { fireEvent } from "../../../../../common/dom/fire_event";
 import { copyToClipboard } from "../../../../../common/util/copy-clipboard";
 import "../../../../../components/ha-button";
 import "../../../../../components/ha-dialog-footer";
-import "../../../../../components/ha-dialog-header";
 import "../../../../../components/ha-icon-button";
 import "../../../../../components/ha-dialog";
 import { haStyleDialog } from "../../../../../resources/styles";
@@ -44,20 +43,6 @@ class DialogESPHomeEncryptionKey extends LitElement {
           "ui.panel.config.devices.esphome.encryption_key_title"
         )}
       >
-        <ha-dialog-header slot="heading">
-          <ha-icon-button
-            slot="navigationIcon"
-            dialogAction="cancel"
-            .label=${this.hass.localize("ui.common.close")}
-            .path=${mdiClose}
-          ></ha-icon-button>
-          <span slot="title">
-            ${this.hass.localize(
-              "ui.panel.config.devices.esphome.encryption_key_title"
-            )}
-          </span>
-        </ha-dialog-header>
-
         <div class="content">
           <p>
             ${this.hass.localize(