Documentation: remove stale howto/rebase-and-edit.txt
Documentation: remove stale howto/rebase-and-edit.txt

The "rebase and edit" howto predates the much easier solution 'git
rebase -i' by two years.

Signed-off-by: Thomas Rast <18f23ef7096473d837b7404952f13710423b8b63@student.ethz.ch>
Signed-off-by: Shawn O. Pearce <f01032651c12a22b2103346ba96b3b6b231f9d3c@spearce.org>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git