Refactor prior to adding task-page

appengine/swarming/elements/res/imp/botpage/bot-page-shared-behavior.html

Index: appengine/swarming/elements/res/imp/botpage/bot-page-shared-behavior.html
diff --git a/appengine/swarming/elements/res/imp/botpage/bot-page-shared-behavior.html b/appengine/swarming/elements/res/imp/botpage/bot-page-shared-behavior.html
index d5f3df01e4c0c63608720cc2784161cb26f77444..b1b96ff1e2b6366c486fe78003f6bc9fb21b2242 100644
--- a/appengine/swarming/elements/res/imp/botpage/bot-page-shared-behavior.html
+++ b/appengine/swarming/elements/res/imp/botpage/bot-page-shared-behavior.html
@@ -19,28 +19,6 @@
     // extending SwarmingBehaviors.CommonBehavior
     SwarmingBehaviors.BotPageBehavior = [SwarmingBehaviors.CommonBehavior, {
 
-      // timeDiffApprox returns the approximate difference between now and
-      // the specified date.
-      _timeDiffApprox: function(date){
-        if (!date) {
-          return "eons";
-        }
-        return sk.human.diffDate(date.getTime());
-      },
-
-      // timeDiffExact returns the exact difference between the two specified
-      // dates.  E.g. 2d 22h 22m 28s ago If a second date is not provided,
-      // now is used.
-      _timeDiffExact: function(first, second){
-        if (!first) {
-          return "eons";
-        }
-        if (!second) {
-          second = new Date();
-        }
-        return sk.human.strDuration((second.getTime() - first.getTime())/1000);
-      },
-
     }];
   })()
 </script>