Convert more DOM_NO_ERR cases to assertions

There is some risk to this change. The first is that I made a mistake. The
other is that one of the APIs that doesn't currently return an error changes
in the future.

src/cdp/domains/network.zig

@@ -19,7 +19,6 @@
 const std = @import("std");
 const Allocator = std.mem.Allocator;
 
-const log = @import("../../log.zig");
 const CdpStorage = @import("storage.zig");
 const Transfer = @import("../../http/Client.zig").Transfer;
 const Notification = @import("../../notification.zig").Notification;