gitea/models/migrations/v1_13
delvh e10ba5e5e0
Rename `Sync2` -> `Sync` ()
The xorm `Sync2` has already been deprecated in favor of `Sync`,
so let's do the same inside the Gitea codebase.

Command used to replace everything:
```sh
for i in $(ag Sync2 --files-with-matches); do vim $i -c ':%sno/Sync2/Sync/g' -c ':wq'; done
```
..
v140.go Rename `Sync2` -> `Sync` ()
v141.go Rename `Sync2` -> `Sync` ()
v142.go Implement FSFE REUSE for golang files ()
v143.go Less naked returns ()
v144.go Implement FSFE REUSE for golang files ()
v145.go Rename `Sync2` -> `Sync` ()
v146.go Rename `Sync2` -> `Sync` ()
v147.go Rename `Sync2` -> `Sync` ()
v148.go Implement FSFE REUSE for golang files ()
v149.go Rename `Sync2` -> `Sync` ()
v150.go Implement FSFE REUSE for golang files ()
v151.go Rename `Sync2` -> `Sync` ()
v152.go Rename `Sync2` -> `Sync` ()
v153.go Rename `Sync2` -> `Sync` ()
v154.go Rename `Sync2` -> `Sync` ()