Remove null pointer support in setComponentHandler

This should be an implementation fault.

src/common/logging/vst3.cpp

@@ -209,13 +209,8 @@ bool Vst3Logger::log_request(
     const YaEditController::SetComponentHandler& request) {
     return log_request_base(is_host_vst, [&](auto& message) {
         message << request.instance_id
-                << ": IEditController::setComponentHandler(handler = ";
-        if (request.component_handler_proxy_args) {
-            message << "<IComponentHandler*>";
-        } else {
-            message << "<nullptr>";
-        }
-        message << ")";
+                << ": IEditController::setComponentHandler(handler = "
+                   "<IComponentHandler*>)";
     });
 }