Do not disable Open Network Notifications setting on profile change.

The DISALLOW_CONFIG_WIFI user restriction will be enforced in the
feature implementation instead.

Bug: 35996959
Test: runtest --path
frameworks/base/services/tests/servicestests/src/com/android/server/pm/UserRestrictionsUtilsTest.java

Change-Id: Iabde4f974d26ab264e9544018d6547b4147f81aa