Fix host_dirty on dev_malloc_if missing
Fix host_dirty on dev_malloc_if missing

This addition from the Snake debugging was unnecessary, and broke intermediate
buffers in local laplacian.


Former-commit-id: b3257d713258e1c9739c1f66b3ec7501aa70ed6e
Trass3r/Halide,darkbuck/Halide,darkbuck/Halide,darkbuck/Halide,Trass3r/Halide,Trass3r/Halide,darkbuck/Halide,darkbuck/Halide,Trass3r/Halide,darkbuck/Halide,darkbuck/Halide,Trass3r/Halide,Trass3r/Halide,Trass3r/Halide