Revert "net: hns3: disbable pfc en before the reset"

driver inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I7S5M4


CVE: NA

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This reverts commit 29e4bb1a.

Signed-off-by: Jiantao Xiao <xiaojiantao1@h-partners.com>