Contain the vimNotation syntax group, matching this at top level is
unnecessary and very slow.
The removed vimString and vimNumber definitions are broken and/or never
match. They have long been replaced by newer definitions.
closes: #16645
Signed-off-by: Doug Kearns <dougkearns@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>