Remove adjacent items in-place

nums = [1,1,1,2,2,3,3,3,6,5,5,1,1,1]
def remove_adjacent(nums):
    """Removes adjacent items by modifying "nums" in-place. Returns None!"""
    i = 0
    while True:
        try:
            if nums[i] == nums[i+1]:
                nums.pop(i)
            else:
                i += 1
        except IndexError:
            break
print nums
remove_adjacent(nums)
print nums