fix(emu): resolve double free with main mem ptr

src/core/nds7/Bus.zig

@@ -33,7 +33,6 @@ pub fn init(allocator: Allocator, scheduler: *Scheduler, shared_ctx: SharedConte
 }
 
 pub fn deinit(self: *@This(), allocator: Allocator) void {
-    allocator.destroy(self.main);
     allocator.destroy(self.wram);
 }
 

src/core/nds9/Bus.zig

@@ -40,7 +40,6 @@ pub fn init(allocator: Allocator, scheduler: *Scheduler, shared_ctx: SharedConte
 pub fn deinit(self: *@This(), allocator: Allocator) void {
     self.ppu.deinit(allocator);
 
-    allocator.destroy(self.main);
     allocator.destroy(self.vram1);
 }