Two of Hong Kong’s biggest property developers plan to squeeze more than 11,000 homes onto a parcel of land they had originally earmarked for 300 villas, as government schemes to boost land supply face delays.Sun Hung Kai Properties and Hongkong Land Holdings have applied to increase the plot ratio – the gross floor area of a project compared to the size of the plot – of a newly-converted piece of farmland in the New Territories.They want to raise the ratio by more than 13 times so that the 1.5…