Revert "CB-13163: fix using relative paths in calls to require."

This reverts commit 65fd0f61cca4d979e653ab5cf2dbc32b50416ba9.
diff --git a/src/scripts/require.js b/src/scripts/require.js
index 8bf5848..93d01c4 100644
--- a/src/scripts/require.js
+++ b/src/scripts/require.js
@@ -31,7 +31,7 @@
         requireStack = [],
     // Map of module ID -> index into requireStack of modules currently being built.
         inProgressModules = {},
-        SEPARATOR = "/";
+        SEPARATOR = ".";
 
 
 
diff --git a/test/test.require.js b/test/test.require.js
index 1f1724f..c7e2285 100644
--- a/test/test.require.js
+++ b/test/test.require.js
@@ -145,15 +145,5 @@
             define("a", factory);
             require("a");
         });
-
-        it("can handle multiple defined modules that use relative require paths", function () {
-            define("plugin/ios/foo", function (require, exports, module) {
-                module.exports = require("./bar") * 2;
-            });
-            define("plugin/ios/bar", function (require, exports, module) {
-                module.exports = 2;
-            });
-            expect(require("plugin/ios/foo")).toEqual(4);
-        });
     });
 });