Removed reference to the reverse method in ipynb file

novice/python/03-loop.ipynb

@@ -435,15 +435,7 @@
       "    It also has a function called `pow` that calculates the same value.\n",
       "    Write a function called `expo` that uses a loop to calculate the same result.\n",
       "\n",
-      "1.  Python's strings have methods, just like NumPy's arrays.\n",
-      "    One of these is called `reverse`:\n",
-      "    \n",
-      "    ~~~python\n",
-      "    print 'Newton'.reverse()\n",
-      "    notweN\n",
-      "    ~~~\n",
-      "    \n",
-      "    Write a function called `rev` that does the same thing:\n",
+      "1.  Write a function called `rev` that reverses the order of a Python string:\n",
       "    \n",
       "    ~~~python\n",
       "    print rev('Newton')\n",
@@ -914,4 +906,4 @@
    "metadata": {}
   }
  ]
-}
+}