po: remove unnecessary/buggy positional parameter specifiers

po: remove unnecessary/buggy positional parameter specifiers

The strings in e2fsck/problem.c use a special %-expansion scheme,
where %b gets expanded to a block number, %i gets expanded to an inode
number, etc., where these values are in a problem context data
structure.  As such, there is no need to use a printf style positional
indicator (e.g., %2$s).  Indeed, the use of things like %1$i or %2$b
will cause the %-expansion code to just print %1$i or %2$b, instead of
the inode or block number, respectively.

Addresses-Debian-Bug: #892173

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: Philipp Thomas <pth@suse.de>
Cc: Benno Schulenberg <vertaling@coevern.nl>
Cc: Trần Ngọc Quân <vnwildman@gmail.com>
Cc: Petr Pisar <petr.pisar@atlas.cz>