WeWork, the cash-strapped co-working company whose IPO failed, is weighing giving up office floors in at least half a dozen locations in Hong Kong, one of the world’s most expensive property markets.New York-based WeWork is considering surrendering a portion of a recently signed lease in Wan Chai, near Hong Kong’s central business district, according to people familiar with the matter. The firm leased four floors, or around 60,000 square feet, for nine years in the Hopewell Centre in August,…