The shuttered Sears in Cherry Creek is about to come down — and that’s just the start of the changes. Denver-based BMC Investments, led by Matt Joblon, said Monday that it and its partners have closed on debt financing that allows them to begin work on the redevelopment of the Clayton Lane project in Cherry Creek. The work will involve demolishing the Sears along First Avenue, which closed in 2015, as well as the former Crate & Barrel at 101 Cla…