Fix "global-strict" lint

Reviewed By: @vjeux

Differential Revision: D2420561

.eslintrc

@@ -126,9 +126,7 @@
   // Strict Mode
   // These rules relate to using strict mode.
 
-    "global-strict": [2, "always"],  // require or disallow the "use strict" pragma in the global scope (off by default in the node environment)
-    "no-extra-strict": 1,            // disallow unnecessary use of "use strict"; when already in strict mode
-    "strict": 0,                     // require that all functions are run in strict mode
+    "strict": [2, "global"],         // require or disallow the "use strict" pragma in the global scope (off by default in the node environment)
 
   // Variables
   // These rules have to do with variable declarations.