Remove statslog-telephony-java-gen from telephony-common

and move it to framework-telephony-sources

Bug: 188462677
Test: m
Change-Id: Ie87cab6a1e85a751ef8a3cc0fbf8cb1bda0985dc
(cherry picked from commit 7a108ed4)
Merged-In: Ie87cab6a1e85a751ef8a3cc0fbf8cb1bda0985dc