Unnecessary SPARC g0 override

[2over12]

I think pcode already handles folding g0 so I dont think these initializations are required:

remill/lib/Arch/Sleigh/SPARC32Base.cpp

Lines 269 to 274 in 17cff6b

	ir.CreateStore(zero_u32, ir.CreateAlloca(u32, nullptr, "g0"), false);
	ir.CreateStore(zero_u32, ir.CreateAlloca(u32, nullptr, "ignore_write_to_g0"),
	false);
	// this is for unknown asr to avoid crash.
	ir.CreateStore(zero_u32, ir.CreateAlloca(u32, nullptr, "asr"), false);