Remove vimdiff

While we're here:
- Remove references to the '+diff' feature, which has since been made
  non-optional.
- Update a few Vim instances with Nvim.

1 files changed, 0 insertions, 46 deletions

diff --git a/runtime/doc/manpages/vimdiff.1 b/runtime/doc/manpages/vimdiff.1
deleted file mode 100644
index bed2b32889..0000000000
--- a/runtime/doc/manpages/vimdiff.1
+++ /dev/null
@@ -1,46 +0,0 @@
-.TH VIMDIFF 1 "2001 March 30"
-.SH NAME
-vimdiff \- edit two, three or four versions of a file with Vim and show differences
-.SH SYNOPSIS
-.br
-.B vimdiff
-[options] file1 file2 [file3 [file4]]
-.PP
-.B gvimdiff
-.SH DESCRIPTION
-.B Vimdiff
-starts
-.B Vim
-on two (or three or four) files.
-Each file gets its own window.
-The differences between the files are highlighted.
-This is a nice way to inspect changes and to move changes from one version
-to another version of the same file.
-.PP
-See vim(1) for details about Vim itself.
-.PP
-When started as
-.B gvimdiff
-the GUI will be started, if available.
-.PP
-In each window the 'diff' option will be set, which causes the differences
-to be highlighted.
-.br
-The 'wrap' and 'scrollbind' options are set to make the text look good.
-.br
-The 'foldmethod' option is set to "diff", which puts ranges of lines without
-changes in a fold.  'foldcolumn' is set to two to make it easy to spot the
-folds and open or close them.
-.SH OPTIONS
-Vertical splits are used to align the lines, as if the "\-O" argument was used.
-To use horizontal splits instead, use the "\-o" argument.
-.PP
-For all other arguments see vim(1).
-.SH SEE ALSO
-vim(1)
-.SH AUTHOR
-Most of
-.B Vim
-was made by Bram Moolenaar, with a lot of help from others.
-See ":help credits" in
-.B Vim.