not sure how to move or resize but there are a few things you can do to make it less
strings/strings search for "Last"
you will get a hit like this :-
Take out the text/delete "Last updated:" so it leaves ><
this of course will hide the text on the main icons
then also go into res/drawable folder and look for this icon :-
you can replace it with a blank .png 1x1 pixel or add a little logo etc.
This does not fully solve your problem as you will still have the time displayed but its on the right track , maybe someone else knows how to hide that .