Whitney Houston's brother Gary Houston isn't bothered one bit that Whitney snubbed him in her will -- telling TMZ, "I dont concern myself with any of that [will stuff] ... All I know is my sister's gone."
Gary just arrived in New York from Atlanta -- where a hearing was held yesterday naming his wife Pat the executor of Whitney's estate -- and we asked him about Whitney naming her daughter Bobbi Kristina as the sole beneficiary of her estate.
Gary left the airport with his wife Pat by his side -- who tells us, she's coping with Whitney's death "day by day."
As we previously reported, if Bobbi dies before probate is completed -- Whitney's assets will be split among her ex-husband Bobby Brown and several relatives.