Comment out Stage::gpu_tile() deprecations to appease Travis
Comment out Stage::gpu_tile() deprecations to appease Travis


Former-commit-id: 0d55dfb4f92bbf6b11ee9898b836adecad420df0
darkbuck/Halide,Trass3r/Halide,darkbuck/Halide,Trass3r/Halide,darkbuck/Halide,Trass3r/Halide,darkbuck/Halide,Trass3r/Halide,darkbuck/Halide,darkbuck/Halide,Trass3r/Halide,darkbuck/Halide,Trass3r/Halide,Trass3r/Halide