[vernac] Remove `Save thm id.` command.

We'd like to cleanup the `proof_end` type so we can have a smaller
path in proof save. Note that the construction:

```
Goal Type.
⋮
Save id.
```

has to be handled by the STM in the same path as Defined (but with an
opaque flag), as `Save id` will alter the environment and cannot be
processed in parallel.

We thus try to simply such paths a bit, as complexity of `lemmas.ml`
seems like an issue these days. The form `Save Theorem id` doesn't
really seem used, and moreover we should really add a type of "Goal",
and unify syntax.

It is often the case that beginners try `Goal addnC n : n + 0 = n."
etc...

1 files changed, 0 insertions, 8 deletions

diff --git a/doc/refman/RefMan-pro.tex b/doc/refman/RefMan-pro.tex
index 7e2b9db24d..0760d716e3 100644
--- a/doc/refman/RefMan-pro.tex
+++ b/doc/refman/RefMan-pro.tex
@@ -96,14 +96,6 @@ memory overflow.
   (and the following ones) can only be used if the original goal has
   been opened using the {\tt Goal} command.
 
-\item {\tt Save Theorem {\ident}.} \\
- {\tt Save Lemma {\ident}.} \\
- {\tt Save Remark {\ident}.}\\
- {\tt Save Fact {\ident}.}
- {\tt Save Corollary {\ident}.}
- {\tt Save Proposition {\ident}.}
-
-  Are equivalent to {\tt Save {\ident}.} 
 \end{Variants}
 
 \subsection[\tt Admitted.]{\tt Admitted.\comindex{Admitted}\label{Admitted}}