The payroll is shrinking slightly at Whole Foods Market Inc., both near the top as senior managers decide to leave now that the grocery chain is owned by Amazon.com Inc. and as others lose their jobs because of consolidation. Business Insider, CNBC and Grub Street reported Friday that Whole Foods was cutting some junior marketers in its 11 regional offices and all of its graphic designers at the individual-store level (the company has 473 locations in the United States and the United Kingdom, although…