delete removed config keys from offline.py

Author: emilykl

plotly/offline/offline.py

@@ -122,13 +122,8 @@ def _get_jconfig(config=None):
         "showAxisRangeEntryBoxes",
         "showTips",
         "displayNotifier",
-        "showLink",
-        "linkText",
-        "sendData",
-        "showSources",
         "displayModeBar",
         "showSendToCloud",
-        "showEditInChartStudio",
         "modeBarButtonsToRemove",
         "modeBarButtonsToAdd",
         "modeBarButtons",
@@ -138,7 +133,6 @@ def _get_jconfig(config=None):
         "plotGlPixelRatio",
         "setBackground",
         "topojsonURL",
-        "mapboxAccessToken",
         "logging",
         "notifyOnLogging",
         "queueLength",