Revert "Cancel dumpstate if client disconnects"

This reverts commit 3d509846cfa9430575f9eb4dfb46957b04788638.

Bug: 268200878
Test: Attempting BR during an existing BR will result in an error
message and not abort the original Bug Report.
Ignore-AOSP-First: This patch reverts a change which is not in AOSP at all
Signed-off-by: Matt Delmage <mdelmage@google.com>
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:7ed14b44b7f540c98a2b1e61d5b953e7bf36fd96)
Merged-In: Idbb149b9e3f55bcb2426f1192b5239947055b4c9
Change-Id: Idbb149b9e3f55bcb2426f1192b5239947055b4c9