Remove that extra variable declared by blocks with event handler args (#3007)
Remove that extra variable declared by blocks with event handler args (#3007)


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