Remove ToTimeoutSeconds.SendPingAsync and fix TimeSpan behavior

[deeprobin]

As described in #64860 (comment), this reverts the SendPingAsync overloads and further code review suggestions applied.

Follow-up for #64860 - Closes #14336

/cc @danmoseley
/cc @stephentoub

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Issue Details

---

As described in #64860 (comment), this reverts the SendPingAsync overloads and further code review suggestions applied.

Follow-up for #64860 - Closes #14336

/cc @danmoseley
/cc @stephentoub

Author:	deeprobin
Assignees:	-
Labels:	area-System.Net, new-api-needs-documentation
Milestone:	-

[stephentoub]

Thanks.

[danmoseley]

Thanks could you please open a new issue specifically to implement the async Ping API? That will involve someone going into the ping implementation so it should be separate from #67156

[deeprobin]

Thanks could you please open a new issue specifically to implement the async Ping API? That will involve someone going into the ping implementation so it should be separate from #67156

#67260