chore: remove unnecessary @as calls

src/bus/io.zig

@@ -27,10 +27,10 @@ pub const Io = struct {
 
     pub fn read32(self: *const Self, addr: u32) u32 {
         return switch (addr) {
-            0x0400_0000 => @as(u32, self.dispcnt.raw),
-            0x0400_0004 => @as(u32, self.dispstat.raw),
-            0x0400_0006 => @as(u32, self.vcount.raw),
-            0x0400_0200 => @as(u32, self.ie.raw),
+            0x0400_0000 => self.dispcnt.raw,
+            0x0400_0004 => self.dispstat.raw,
+            0x0400_0006 => self.vcount.raw,
+            0x0400_0200 => self.ie.raw,
             0x0400_0208 => @boolToInt(self.ime),
             else => std.debug.panic("[I/O:32] tried to read from {X:}", .{addr}),
         };