Update README.md - Remove duplicate menu (lvgl#329)

Author: lucashfernandes91

README.md

@@ -455,20 +455,6 @@ lv.scr_load(scr)
 
 ```
 
-### Creating a screen with a button and a label
-```python
-scr = lv.obj()
-btn = lv.button(scr)
-btn.align(lv.scr_act(), lv.ALIGN.CENTER, 0, 0)
-label = lv.label(btn)
-label.set_text("Button")
-
-# Load the screen
-
-lv.scr_load(scr)
-
-```
-
 #### Creating an instance of a struct
 ```python
 symbolstyle = lv.style_t(lv.style_plain)