plugin: template: do not make flb_register_plugins() inline
@FLB_OUT_PLUGINS_DECL@
@FLB_FILTER_PLUGINS_DECL@
-void FLB_INLINE flb_register_plugins(struct flb_config *config)
+void flb_register_plugins(struct flb_config *config)
{
struct flb_input_plugin *in;
struct flb_output_plugin *out;
