Modify VTS NoStaleEvents test to omit on-change sensors

- add utility function to select non one-shot, non on-change and
  non special-report sensors
- apply to NoStaleEvents test case
- remove unnecessary checks related to on-change sensors

b/170315229

Change-Id: I349fe8be35fd1fa6f9ff1e0844b09815006a18b8
1 file changed