always turn on yotta when building locally (#2055)
always turn on yotta when building locally (#2055)


switchinnovations/pxt,switchinnovations/pxt,playi/pxt,playi/pxt,playi/pxt,Microsoft/pxt,Microsoft/pxt,switch-education/pxt,Microsoft/pxt,Microsoft/pxt,switch-education/pxt,switchinnovations/pxt,playi/pxt,switch-education/pxt,switchinnovations/pxt,switch-education/pxt,switch-education/pxt,Microsoft/pxt