Drop Assert IR nodes from Ptx_dev codegen
Drop Assert IR nodes from Ptx_dev codegen

Former-commit-id: aec84ea379b1107bf45afc2db5e95a0dc3defa22
Trass3r/Halide,darkbuck/Halide,Trass3r/Halide,Trass3r/Halide,darkbuck/Halide,darkbuck/Halide,darkbuck/Halide,Trass3r/Halide,Trass3r/Halide,Trass3r/Halide,darkbuck/Halide,darkbuck/Halide,darkbuck/Halide,Trass3r/Halide