fix: remove unused import

Zxilly · Zxilly · commit 2f8801c47e71 · 2021-03-19T00:03:58.000+08:00
Signed-off-by: Zxilly &lt;zhouxinyu1001@gmail.com&gt;
diff --git a/src/enforcer.ts b/src/enforcer.ts
@@ -17,7 +17,6 @@ import { Model, newModel } from './model';
 import { Adapter, FileAdapter, StringAdapter } from './persist';
 import { getLogger } from './log';
 import { arrayRemoveDuplicates } from './util';
-import RuntimeError = WebAssembly.RuntimeError;
 
 /**
  * Enforcer = ManagementEnforcer + RBAC API.
