zig fmt and delete unused type

src-self-hosted/codegen.zig

@@ -75,10 +75,9 @@ pub fn generateSymbol(
                                             "TODO implement function parameters of type {}",
                                             .{@tagName(param_type.zigTypeTag())},
                                         ),
+                                    },
                                 }
                             }
-                            }
-
                         },
                         else => return Result{
                             .fail = try ErrorMsg.create(
@@ -689,7 +688,7 @@ const Function = struct {
                 },
                 .stack_offset => |off| {
                     return self.fail(src, "TODO implement genSetReg for stack variables", .{});
-                }
+                },
             },
             else => return self.fail(src, "TODO implement genSetReg for more architectures", .{}),
         }

src-self-hosted/codegen/x86_64.zig

@@ -68,24 +68,3 @@ pub const Register = enum(u8) {
 };
 
 // zig fmt: on
-
-/// After argument values have been computed, they are placed either in registers
-/// or pushed on the stack. The way values are passed depends on the class.
-pub const ParameterClass = enum {
-    /// Integral types that fit into one of the general purpose registers.
-    integer,
-    /// Types that fit into a vector register.
-    sse,
-    /// Types that fit into a vector register and can be passed
-    /// and returned in the upper bytes of it.
-    sse_up,
-    /// Types  that  will  be  returned  via  the  x87FPU.
-    x87,
-    /// Types  that  will  be  returned  via  the  x87FPU and can be passed and returned
-    /// in the upper bytes of it.
-    x87_up,
-    /// Types that will be returned via the x87FPU.
-    complex_x87,
-    /// Types that will be passed and returned in mem-ory via the stack.
-    memory,
-};