gitea/models/migrations/v1_15
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
```
..
main_test.go Implement FSFE REUSE for golang files ()
v178.go Rename `Sync2` -> `Sync` ()
v179.go Implement FSFE REUSE for golang files ()
v180.go Less naked returns ()
v181.go Rename `Sync2` -> `Sync` ()
v181_test.go Implement FSFE REUSE for golang files ()
v182.go Rename `Sync2` -> `Sync` ()
v182_test.go Implement FSFE REUSE for golang files ()
v183.go Rename `Sync2` -> `Sync` ()
v184.go Rename `Sync2` -> `Sync` ()
v185.go Rename `Sync2` -> `Sync` ()
v186.go Rename `Sync2` -> `Sync` ()
v187.go Rename `Sync2` -> `Sync` ()
v188.go Implement FSFE REUSE for golang files ()