As has already been said turn auto loot on , the skinning takes far longer than looting does anyway , and as long as you have auctioneer it will tell you what trash (very low worth stuff) to delete when your bags start to overflow , i know some say save everything to sell or vendor but i know from experience i can delete a few items and make even more gold , i do this when solo running low instances like RFK twice in a row as i get stuff for my alts and only take out the cloth and greens , its either delete stuff or waste a good half hour running to a vendor and posting the good stuff to an alt.
But that only works in the old world lower levels as outland trash can be worth saving to vendor , and the new region is well worth keeping almost all trash.