Revert "Animations pt 1"

This reverts commit 5f9f100224.

playground/src/commons/Options.js

         to: 1,
         duration: useSlowOpenScreenAnimations ? SHOW_DURATION : 300
       }
-    },
-    bottomTabs: {
-      enter: {
-
-      },
-      exit: {
-
-      }
     }
   },
   pop: {