I’ve received a 1099 misc as well as a 1099-k from PayPal. However the income reported on the 1099 misc is double reported on the 1099-k. How should I deal with this?

See this answer from AnthonyC:

First, the IRS only cares about total income numbers, so you should only report your total income regardless of the forms received (if you look at a Schedule C, you can see only total income is reported).

The best method to handle this situation in TurboTax so you don't double report is to report the 1099-MISC as it was reported to you and then reduce the amount from the 1099-K that you report to account for the double inclusion.  A 1099-K gets reported as additional income along with cash and checks, so its simpler to just reduce this amount.

Here are the steps you can take to claim your income - 

• Log into your account and click Take Me To My Return (you must click this before searching if you are not already in your account)
• Click the search box at the top right of your screen (magnifying glass icon)
• Search for “Schedule C" in the search box
• Click the "jump to schedule c" ink in the search results.
• Follow the first set onscreen instructions - you might have to set up a Business profile if you already haven’t 
• You will arrive at the Your Business summary page where you will see the various income and expenses categories.