Remove unused npm package

- We are not using the chai npm package. It was not removed after
moving to Jest

Signed-off-by: Derick Montague <derick.montague@ibm.com>
Change-Id: I13bb8296bfa06a40e855ec3ae43625b668e92cf0
diff --git a/package.json b/package.json
index b2e5d14..3b65542 100644
--- a/package.json
+++ b/package.json
@@ -44,7 +44,6 @@
     "@vue/eslint-config-prettier": "5.0.0",
     "@vue/test-utils": "1.0.0-beta.31",
     "babel-eslint": "10.0.3",
-    "chai": "4.1.2",
     "check-node-version": "4.0.2",
     "compression-webpack-plugin": "3.0.1",
     "eslint": "5.16.0",