Revert "reset: add an example of how to split a commit into two"

This reverts commit 7326451bedaa67d29afe02184b166e28d9393c91; a
better rewrite will be queued separately.

Documentation/git-reset.txt

@@ -292,44 +292,6 @@ $ git reset --keep start                    <3>
 <3> But you can use "reset --keep" to remove the unwanted commit after
     you switched to "branch2".
 
-Split a commit into two::
-+
-Suppose that you have created a commit, but later decide that you want to break
-apart the changes into two logical chunks and commit each separately. You want
-to include part of the original commit into the first commit, while including
-the remainder in a second commit. You can use git reset to rewind the history
-without changing the index, and then use git add -p to interactively select
-which hunks to put into the first commit.
-+
-------------
-$ git reset HEAD^                           <1>
-$ git add -p                                <2>
-$ git diff --cached                         <3>
-$ git commit -c HEAD@{1}                    <4>
-...
-$ git add ...                               <5>
-$ git diff --cached                         <6>
-$ git commit ...                            <7>
-------------
-+
-<1> First, reset the history back one commit so that we remove the original
-    commit, but leave the working tree with all the changes.
-<2> Now, interactively select hunks to add to a new commit using git add -p.
-    This will ask for each hunk separately and you can use simple commands like
-    "yes, include", "no don't include" or even "edit".
-<3> Once satisfied with the hunks, you should verify that it is what you
-    expected by using git diff --cached to show all changes in the index.
-<4> Next, commit the changes stored in the index. "-c" specifies to load the
-    editor with a commit message from a previous commit so that you can re-use the
-    original commit message. HEAD@{1} is special notation to reference what
-    HEAD used to be prior to the reset command. See linkgit:git-reflog[1] for
-    more details.
-<5> Now you've created the first commit, and can repeat steps 2-4 as often as
-    you like to break the work into any number of commits. Here we show a second
-    step which simply adds the remaining changes.
-<6> Then check again that the changes are what you expected to add.
-<7> And finally commit the remaining changes.
-
 
 DISCUSSION
 ----------