pmu: remove uncore code for Zhaoxin Platform

zhaoxin inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I7LXCE


CVE: NA

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There are some issues that need to be resolved for Zhaoxin Platform.
So remove Zhaoxin uncore code first.

Signed-off-by: leoliu-oc <leoliu-oc@zhaoxin.com>