[O] Remove filename from agenda view?

[Boyan Penkov]

Hello,

In the default agenda view (C-c a), the leftmost column is the org-mode file 
name from which the given item stems.  However, I use a single file for all my 
actionables, and would like to eliminate this column, as it wastes 12 or so 
characters worth of space on the left of the agenda.

Can anyone point me in the right direction with a .emacs file snippet?

Thanks!
--
Boyan Penkov