"else" on for loops is only important if the loop contains a "break"
statement. Without a "break", the else block is _always_ executed and
it is clearer just to omit "else".
This change also enables the corresponding pylint warning, now that the
only offending case has been fixed.
Change-Id: Ibe8761cb40a7d2d564aa718d62c9f383b5ad711e