Remove the 'l' and 'L' flag printing in 'STAT' column. These were added

Remove the 'l' and 'L' flag printing in 'STAT' column. These were added
to provide visibility of the internal behaviour of pinsyscalls(2) during
introduction.  These flags remain (less) visible in the "-o procflags"
option, as 0x08000000 (PS_PIN) and 0x10000000 (PS_LIBCPIN).
That's good enough.