[Feature][ZXW-225] Remove synchronization function from lynq fota backup

Only Configure: No
Affected branch: master
Affected module: Fota
Is it affected on both ZXIC and MTK:only zxic
Self-test: Yes
Doc Update:No

Change-Id: I5968f773148d7997432f3a4e215311d4f6e76247
1 file changed