Revert [Telephony mainline] Move METHOD_* constants from SystemContract to BlockedNumberContract

Reason: Revisit and redesign in S

Bug: 147390517
Test: make
Change-Id: Iaa06530a4a2411494f55322131d5a1a40b7b3020
Merged-In: Iaa06530a4a2411494f55322131d5a1a40b7b3020
(cherry picked from commit ddce7e2141d62be064c3cdec1ddc98412c0fa1bd)
1 file changed