Remove upper bound check of getTotal* APIs in TrafficStatsTest

Currently, this cause flakiness since some background traffic
was counted when performing tests, or the traffic generated by
adb over network. While there is no good way to filter out all
reasonable cases, disable the upper bound checks.

Test: atest TrafficStatsTest
Bug: 142978584
Bug: 151803202
Change-Id: I8140310c9caeff6069d1f55590bf40f83bf211e4
Merged-In: I8140310c9caeff6069d1f55590bf40f83bf211e4
Merged-In: I22edc46039bf35e544d9ce8a9f3a00b713478e05
(cherry picked from commit 4d33e5d2ef158e9cca3118c910b5f3539785481c)
1 file changed