Remove redundant tsconfig setting

Author: rekmarks

tsconfig.json

@@ -8,8 +8,7 @@
     "noEmit": true,
     "skipLibCheck": true,
     "strict": true,
-    "target": "es2017",
-    "typeRoots": ["./node_modules/@types"]
+    "target": "es2017"
   },
   "exclude": ["./dist/**/*"]
 }