Remove infinite loop workaround

[SeanTAllen]

Several years ago, Benoit added code to work around LLVM's lack
of support for properly functioning infinite loops.

LLVM added support for infinite loops.

With this commit, we are removing Benoit's temporary fix.

[ergl]

The original PR (#2592) also enabled TrapUnreachable (which emits a target-specific trap instruction for unreachable IR instructions). Do we want to revert that, too?

[SeanTAllen]

If I understand correctly @ergl, that you be to remove this line as the rest is from existing code that was moved around:

options.TrapUnreachable = true;

correct?

[ergl]

@SeanTAllen Yes, I would remove that line, the rest was just moving things around, as you mention.

[SeanTAllen]

@ergl if @jemc agrees then I'll remove it as we would all be in agreement (as we were with what is currently here that we went over at sync).

[jemc]

I agree about no longer needing the "trap unreachable" setting anymore.

[SeanTAllen]

@jemc @ergl updated.