fixes to prevent scrolling from last position of reading upon resume

[sempsmahad]

Two options were possible here

1. To update the highlightedsura and ayat variables to the last ayat that was being read before closing app.
   Limitation: - The ayat will be highlighted which is undesirable
2. To comment out the code that highlights and scrolls to the bookmarked ayat at resume.
   Limitation: - none

So my changes for no. 2 options
Please test and revert.