patch 9.0.1994: inconsistent feature description

Problem:  inconsistent feature description
Solution: delete old mentioned feature sets small and big

The may however still be mentioned for historical reasons. e.g. The
last Amiga built version is for Vim6.2 and is still a big version.

closes: #13273

Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: RestorerZ <restorer@mail2k.ru>

runtime/doc/various.txt

@@ -320,15 +320,13 @@ g8			Print the hex values of the bytes used in the
 			The first column shows the smallest version in which
 			they are included:
 			   T	tiny (always)
-			   S	small
 			   N	normal
-			   B	big
 			   H	huge
 			   m	manually enabled or depends on other features
 			   -    never, feature was removed
 			 (none) system dependent
 			Thus if a feature is marked with "N", it is included
-			in the normal, big and huge versions of Vim.
+			in the normal and huge versions of Vim.
 
 							*+feature-list*
    *+acl*		|ACL| support included