Core: Avoid including modules_enabled in headers

modules/gdscript/language_server/gdscript_language_protocol.h

@@ -36,12 +36,7 @@
 #include "core/io/stream_peer_tcp.h"
 #include "core/io/tcp_server.h"
 
-#include "modules/modules_enabled.gen.h" // For jsonrpc.
-#ifdef MODULE_JSONRPC_ENABLED
 #include "modules/jsonrpc/jsonrpc.h"
-#else
-#error "Can't build GDScript LSP without JSONRPC module."
-#endif
 
 #define LSP_MAX_BUFFER_SIZE 4194304
 #define LSP_MAX_CLIENTS 8