inline test configuration to root eslint config

.eslintrc.json

@@ -3,5 +3,19 @@
     "plugin:github/es6",
     "plugin:github/browser",
     "plugin:github/flow"
+  ],
+  "overrides": [
+    {
+      "files": "test/**/*.js",
+      "rules": {
+        "flowtype/require-valid-file-annotation": "off"
+      },
+      "env": {
+        "mocha": true
+      },
+      "globals": {
+        "assert": true
+      }
+    }
   ]
-}
+}

test/.eslintrc.json

@@ -1,12 +0,0 @@
-{
-  "rules": {
-    "flowtype/require-valid-file-annotation": "off"
-  },
-  "env": {
-    "mocha": true
-  },
-  "globals": {
-    "assert": true
-  },
-  "extends": "../.eslintrc.json"
-}