chore: remove useless code

Author: pubuzhixing8

packages/src/components/leaves/leaves.component.ts

@@ -22,7 +22,7 @@ import { isDecoratorRangeListEqual } from '../../utils/range-list';
         [viewContext]="viewContext"
         [viewContext]="viewContext"
         *ngFor="let context of leafContexts; trackBy: trackBy"
-    ></slate-leaf> `,
+    ></slate-leaf>`,
     changeDetection: ChangeDetectionStrategy.OnPush
 })
 export class SlateLeavesComponent extends ViewContainer<SlateLeafComponent> implements OnInit, AfterViewInit, OnChanges {

packages/src/components/string/template.component.html

@@ -1,6 +1,3 @@
-<!-- <ng-template #stringTemplate let-context="context" let-viewContext="viewContext">
-  <span editable-text data-slate-string="true">{{ context.text }}</span>
-</ng-template> -->
 <ng-template #compatStringTemplate let-context="context" let-viewContext="viewContext">
   <!-- Compatible with Chinese input in Chrome with \n -->
   <span editable-text data-slate-string="true"

packages/src/components/string/template.component.ts

@@ -6,9 +6,6 @@ import { Component, ChangeDetectionStrategy, ViewChild, TemplateRef } from '@ang
     changeDetection: ChangeDetectionStrategy.OnPush
 })
 export class SlateStringTemplateComponent {
-    // @ViewChild('stringTemplate', { read: TemplateRef, static: true })
-    // stringTemplate: TemplateRef<any>;
-
     @ViewChild('compatStringTemplate', { read: TemplateRef, static: true })
     compatStringTemplate: TemplateRef<any>;