Reduce tetris firmware size by disabling default audio (#5197)

keyboards/tetris/rules.mk

@@ -52,7 +52,7 @@ COMMAND_ENABLE = no    # Commands for debug and configuration
 SLEEP_LED_ENABLE = no  # Breathing sleep LED during USB suspend
 NKRO_ENABLE = yes		# USB Nkey Rollover - if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
 BACKLIGHT_ENABLE = no  # Enable keyboard backlight functionality
-AUDIO_ENABLE = yes
+AUDIO_ENABLE = no
 RGBLIGHT_ENABLE = yes
 TAP_DANCE_ENABLE = no