Android Mainline 12.0.0 Release 55 (7929774,com.google.android.tzdata2)
gcc-4.9: remove GCC from Android am: 7d50d379c9 am: 03335dbecf am: d4442b5424

Change-Id: I65bd0972b17f5646e2f4e29caedf6f2390ab614e