chmem: Remove commit - chmem print warnings about failures always

chmem: Remove commit - chmem print warnings about failures always

Users do not care which blocks are set offline, when using size option
Consistently printing warnings/errors in this case may confuse them and
create the false impression that the enable/disable operation itself has
failed.

If size option succeeds, chmem should not print errors/warnings.

Hence, revert commit
48675a744 ("chmem: print warnings about failures always (not only with --verbose)")

Signed-off-by: Sumanth Korikkar <sumanthk@linux.ibm.com>