fix: eslint

(cherry picked from commit ba1254f397)

src/components/bpmnProcessDesigner/package/penal/PropertiesPanel.vue

@@ -106,7 +106,7 @@ const elementBusinessObject = ref<any>({}) // 元素 businessObject 镜像，提
 const conditionFormVisible = ref(false) // 流转条件设置
 const formVisible = ref(false) // 表单配置
 const bpmnElement = ref()
-const timer = ref()
+
 provide('prefix', props.prefix)
 provide('width', props.width)
 const bpmnInstances = () => (window as any)?.bpmnInstances