std.testing.refAllDecls: force decl to be analyzed with just @field

Co-authored-by: Veikka Tuominen <git@vexu.eu>

lib/std/testing.zig

@@ -466,8 +466,6 @@ test {
 pub fn refAllDecls(comptime T: type) void {
     if (!builtin.is_test) return;
     inline for (comptime std.meta.declarations(T)) |decl| {
-        if (decl.is_pub and @typeInfo(@TypeOf(@field(T, decl.name))) == .Struct)
-            _ = @hasDecl(@field(T, decl.name), "foo");
-        _ = decl;
+        if (decl.is_pub) _ = @field(T, decl.name);
     }
 }