Floss: Don't discard suspend_id on suspend timeout

When the bluetooth suspend process is timeout, we still continue the
suspend but set the suspend_id to None. This makes resume unable to know
the suspend_id and actually cause crashes in unwrap.

This CL removes the line to set suspend_id to None on timeout.

Bug: 298805909
Test: mma -j32
Test: run bluetooth_AdapterSRHealth on brya
Tag: #floss
Change-Id: Id841bfe07969f422420522ce12ccf15da899cf80