Minneapolis-based Pig’s Eye Theatre has canceled the remainder of its 2005-06 season and will focus on raising enough money to mount a comeback next winter. Pig’s Eye, which operated on a shoestring and was known locally for an offbeat combination of classic repertoire and edgier fare, is at least the second small company in the Twin Cities to face its own mortality in the last year, as high rents and economic malaise take their toll in a region loaded down with theatre.