Remove CONNECTIVITY_ACTION and INET_CONDITION_ACTION

CONNECTIVITY_ACTION is deprecated. The usage should be either
replaced by using networkcallback or removed. The intent is used
in DataConnectionStats for noting the phone connection state.
The related data and information update should be able to be
covered by PhoneStateListener and ACTION_SIM_STATE_CHANGED
intent. Thus, remove the connectivity intents directly instead
of replacing by NetworkCallback.

Bug: 169029216
Bug: 110246171
Test: atest FrameworkNetTests
Test: adb shell dumpsys batterystats and check the data connection
      stats
Change-Id: I520c5cf224716faa333e479e06b6134ee7d81630