Disable material sync support for method printers

No idea why it was turned on, but these machines don't support that at all

CURA-11285

resources/definitions/ultimaker_method_base.def.json

@@ -69,7 +69,6 @@
         "preferred_material": "generic_pla_175",
         "preferred_quality_type": "fast",
         "preferred_variant_name": "1A",
-        "supports_material_export": true,
         "supports_network_connection": true,
         "supports_usb_connection": false,
         "variants_name": "Extruder",