Remove timer when connection is cancelled

Bug: 237600252
Test: gd/cert/run, testplans/1181383
Tag: #refactor
BYPASS_LONG_LINES_REASON: Bluetooth likes 120 lines
Ignore-AOSP-First: Cherry-pick

Merged-In: I3b8dccb23259d9b97cd248dc8adf7423f74ad3a1
Change-Id: I3b8dccb23259d9b97cd248dc8adf7423f74ad3a1
(cherry picked from commit 97412bc3)
Merged-In: I3b8dccb23259d9b97cd248dc8adf7423f74ad3a1