TIF: Remove duplicate cleanup

There were duplicate calls made to disconnect kid profile when switching
back to user. This code change takes them out and makes a note on the
clean up for all running profiles to avoid confusion.

Bug: b/408900599
Test: manual on TV u branch
Flag: EXEMPT remove dup
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:575c33b90b526dd069dcb61237a818877bf25630)
Merged-In: I7a1bc9960290b32379399ee49441196750db3b81
Change-Id: I7a1bc9960290b32379399ee49441196750db3b81