According to court papers filed yesterday, Nas is asking the judge presiding over his divorce proceeding to throw out Kelis' request for $72,728 a month in spousal support. Nas, who earns around $240,000.00 a month, had been given a temporary order to pay Kelis $44,000 in child support and a lump sum of $45,000.00. Nas wants Kelis' spousal support request denied and is also seeking joint custody…