Remove some out of date information about pandas DataFrame reprs

examples/notebooks/Part 5 - Rich Display System.ipynb

@@ -989,24 +989,6 b''
      "cell_type": "markdown",
      "metadata": {},
      "source": [
-      "By default, `DataFrames` will be represented as text; to enable HTML representations we need to set a print option:"
-     ]
-    },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "pandas.core.format.set_printoptions(notebook_repr_html=True)"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": [],
-     "prompt_number": 9
-    },
-    {
-     "cell_type": "markdown",
-     "metadata": {},
-     "source": [
       "Here is a small amount of stock data for APPL:"
      ]
     },