update README.md

@@ -56,18 +56,6 @@ class MyApp extends StatelessWidget {
     );
   }
 }
-
-//fill in the screen size of the device in the design
-
-//default value : width : 360dp , height:690dp , allowFontScaling:false
-ScreenUtil.init(constraints);
-
-//The size of the equipment in the design draft(360,690)
-ScreenUtil.init(constraints, designSize: Size(360, 690));
-
-//If you want to set the font size is scaled according to the system's "font size" assist option
-ScreenUtil.init(constraints, designSize: Size(360, 690), allowFontScaling: true);
-
 ```
 
 ### Use：

@@ -64,16 +64,6 @@ class MyApp extends StatelessWidget {
     );
   }
 }
-
-//默认 width : 360dp , height:690dp , allowFontScaling:false
-ScreenUtil.init(constraints);
-
-//传入设计稿的尺寸(例如(360,690))
-ScreenUtil.init(constraints, designSize: Size(360,690));
-
-//设置字体大小根据系统的“字体大小”辅助选项来进行缩放,默认为false
-ScreenUtil.init(constraints, designSize: Size(360,690), allowFontScaling: true);
-    
 ```
 
 ### 使用

@@ -60,16 +60,6 @@ class MyApp extends StatelessWidget {
     );
   }
 }
-
-//Valor padrão: width : 360dp , height:690dp , allowFontScaling:false
-ScreenUtil.init(constraints);
-
-//The size of the equipment in the design draft(360,690)
-ScreenUtil.init(constraints, designSize: Size(360,690));
-
-//Se você quer definir que o tamanho da fonte seja ajustado de acordo com a opção "tamanho da fonte" na acessibilidade do sistema
-ScreenUtil.init(constraints, designSize: Size(360,690), allowFontScaling: true);
-
 ```
 
 ### Uso：