[Testing] Use AndroidJUnit4 instead in TelephonyTogglePreferenceControllerTest

1. Use AndroidJunit4 instead of RobolectricTestRunner
2. Use ApplicationProvider instead of RuntimeEnvironment to get context
3. Change the Copy Right

Bug: 164986958
Test: atest -c TelephonyTogglePreferenceControllerTest
Merged-In: I3d6c39f45cb1efb1742148f20f03372214eb0cbe
Change-Id: Ie7343f8c6dd45add2832679d95372e750ce350ce
1 file changed