Remove references to compiled GDScript in export

[vnen]

This feature was removed from GDScript so it should not be present on the interface nor in the saved export presets.

Closes #59241

Also removed mentions for encrypted scripts since those are obsolete now that you can encrypt any resource.

Note: The name of the feature may be misleading, since scripts are not "compiled" when this option was selected (in 3.x), it simply stores a binary version of the tokenized file (more details on the linked issue) that helps only a bit for faster loading. There's a plan to store actual compiled files on the exported project, which will be superior in many ways, but unfortunately will not be available in the 4.0 release.

[akien-mga]

Thanks!

[vmtest888]

@vnen Will this patch be released in version 4.0.2?

[vmtest888]

What I mean is, can it be re-implemented in 4.0 if .gd is compiled into .gdc? Otherwise, pck is too insecure.

[YuriSizov]

If it's ever re-implemented, it's not going to be in a patch release (e.g. 4.0.x).

[sepTN]

Will this pull be implemented along with the upcoming 4.1 version?

[Calinou]

This pull request is already merged in 4.0, since this was merged before master was branched out to 4.1 (which happened on 2023-03-01).

This part is still valid though, and not specifically planned for 4.1:

There's a plan to store actual compiled files on the exported project, which will be superior in many ways, but unfortunately will not be available in the 4.0 release.

See also godotengine/godot-proposals#6031, which is tangentially related.