Misc logging improvements

- Log ACTION_SEARCH_RESULTS whenever a search query is performed.
  eg, type "qu" will result 2 such logging events.
- Remove historam logging to search result click count (already logged
  as ACTION_CLICK_SETTINGS_SEARCH_RESULT)

Change-Id: Ia207b34702e0f24a7885e47d093f6cce1314ebc4
Fixes: 67743512
Fixes: 64939544
Test: robotests