fix(mcp23009e): replace wrong pin in dpad piano example

Author: Charly-sketch

lib/mcp23009e/examples/dpad_piano.py

@@ -16,7 +16,7 @@
 from mcp23009e import MCP23009E
 from mcp23009e.const import *
 
-SPEAKER = Pin("SPEAKER", Pin.OUT_PP)
+SPEAKER = Pin("SPEAKER", Pin.OUT)
 
 # I2C and expander setup
 i2c = I2C(1)
@@ -31,9 +31,6 @@
     MCP23009_BTN_LEFT: "LEFT",
 }
 
-# Optional MENU button if available on the board
-MENU_BUTTON = None
-
 # Low octave
 NOTES_LOW = {
     "UP": 262,     # C4