drivers: counter: remove qmsi counter driver

No users of this driver after dropping quark platforms.

COUNTER_0_NAME was only defined by the QMSI driver and was defined but
not used in DTS fixup files of ateml_sam0 SoCs. Removing those leftover
defines as well.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>