[Keyboard] Removed LAYOUTS = ortho_6x16 (#12983)

Removed ortho_6x16 community layout support by commenting out the line.

This can be reversed if that layout ever gets added.

keyboards/fleuron/rules.mk

@@ -30,4 +30,5 @@ BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
 AUDIO_ENABLE = no           # Audio output on port C6
 
 RGBLIGHT_ENABLE = yes
-LAYOUTS = ortho_6x16
+
+#LAYOUTS = ortho_6x16  # Disabled because layouts directory does not have an ortho_6x16 layout set up.