feat: 重新调整header

miniprogram/canvasService/textDrawService.ts

@@ -1,4 +1,5 @@
 import { PAPER_SIZE } from './constant';
+import { getMiniCodeImagePath } from './utils';
 
 class TextDrawService {
     canvas: WechatMiniprogram.Canvas;
@@ -33,11 +34,6 @@ class TextDrawService {
     }
 
     drawHeader() {
-        const { canvas, ctx } = this;
-        const { appName, appHint, title, subTitle } = this.options;
-    }
-
-    drawHeader2() {
         const { canvas, ctx } = this;
         const { title } = this.options;