bug#61707: Remove function-alias-p NOERROR argument

[Mattias Engdegård]

`function-alias-p` is new in Emacs 29, and takes an optional NOERROR argument 
which has become entirely useless in Emacs 30 where it is only present for 
compatibility.

Given that the NOERROR argument is not very useful in Emacs 29 either, what 
about removing it in that version as well? After all, rather silly to introduce 
something that's known to go away the next release.

Proposed patch attached.

0001-Remove-function-alias-p-noerror-argument.patch
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