mio 9a767ad298 testing/sipexer: fix build
Remove duplicate checks in the conditional statements to fix build error
in the sgsip module.

```
github.com/miconda/sipexer/sgsip
sgsip/sgsip.go:1169:35: redundant or: len(ackReq.Headers) == 0 || len(ackReq.Headers) == 0
sgsip/sgsip.go:1169:5: redundant or: len(ackReq.FLine.Val) == 0 || len(ackReq.FLine.Val) == 0
sgsip/sgsip.go:1214:35: redundant or: len(sipReq.Headers) == 0 || len(sipReq.Headers) == 0
sgsip/sgsip.go:1214:5: redundant or: len(sipReq.FLine.Val) == 0 || len(sipReq.FLine.Val) == 0
```
2026-03-07 05:23:15 +00:00
..
2026-03-07 05:23:15 +00:00