[pgAdmin4][Patch]: RM #3676 Issue with the pgAdmin create script forthe function wrapped with edbwrap

Attached is the patch to fix RM #3676 Issue with the pgAdmin create script for the function wrapped with edbwrap. Actual cause of the issue is an extra blank line after "$__EDBwrapped__$" statement, while taking backup of such function will throw an error invalid wrapped string. 

I have fixed the issue by removing extra blank line from the jinja templates. Please review it. --