Delete unused ojluni Register.cpp

Was probably intended to be deleted as part of
http://r.android.com/704673 which re-implemented JNI_OnLoad.
See diff to Android.bp in particular.

Additional checks: There have only been two changes to
Register.cpp since Onload.cpp was created, neither of which
are relevant.  Onload.cpp calls the exact same set of
register_* methods that Register.cpp did.

Bug: 135183279
Test: Taimen boots
Test: Treehugger
Change-Id: Icea9bf216f7bf2b61730ec3ee2c2cd6356077d79
1 file changed